4. Programming in C [Most Important Questions and Solutions]
IMPORTANT OLD QUESTION OF Programming in C
[Functions]
2080 Q. No. 16
Write a C program to enter the radius of a football and find the area of the
football by using a user-defined function.
[5]
Ans:
#include<stdio.h>
#include<conio.h>
float area(int);
void main()
{
int
r;
float a;
clrscr();
printf("Enter radius:");
scanf("%d", &r);
a =
area(r);
printf("The area of a ball is %f", a);
getch();
}
float area(int x)
{
float ar;
ar =
4 * 3.14 * x * x;
return ar;
}
Example Output:
Enter radius: 7
The area of a ball is 615.44
2079 GIE Set B Q. No. 16 Define
function. Write a program to generate the factorial of a given number using a
recursive function in C programming. [3+5]
Ans:
A function in C is a self-contained block of
statements that performs a specific task. A function is executed when it is
called in the program. Some advantages
of functions are as follows:
- Reusability: Use the same code multiple times.
- Modularity: Break the program into smaller parts.
- Easy Maintenance: Fix or update one function without
affecting others.
- Clear and Readable: Makes the program easy to understand.
Different types of functions are as follows:
- Predefined (Library) Functions: Functions provided by C
standard libraries (e.g., printf, scanf, sqrt).
- User-Defined Functions: Functions created by the programmer
to perform specific tasks (e.g., int add(int a, int b)). The different
types of user-defined functions are as follows:
a)
Functions with No Arguments and No
Return Value
b)
Functions with No Arguments but Return
a Value
c)
Functions with Arguments but No Return
Value
d)
Functions with Arguments and Return
Value
A program to generate the factorial of a given
number using a recursive function in C programming is as follows:
#include <stdio.h>
#include <conio.h>
int factorial(int n);
void main()
{
int
n, fact;
clrscr();
printf("Enter a number:");
scanf("%d", &n);
fact
= factorial(n);
printf("Factorial of %d is %d", n, fact);
getch();
}
int factorial(int n)
{
if
(n == 0 || n == 1)
{
return 1;
}
else
{
return n * factorial(n - 1);
}
}
Example Output:
Enter a number: 5
Factorial of 5 is 120
[Structure]
2081 GIE Set A Q. No. 16 Write
a C program to store 10 student records with fields for roll numbers, names,
and marks in computer science. Process and display the roll numbers, names, and
marks of students. [8]
Ans:
#include <stdio.h>
#include <conio.h>
struct student
{
int
rn, marks;
char
name[20];
};
void main()
{
struct student s[10];
int
i;
clrscr();
for
(i = 0; i < 10; i++)
{
printf("Enter Roll Number: ");
scanf("%d", &s[i].rn);
printf("Enter Name: ");
scanf("%s", s[i].name);
printf("Enter Marks in Computer Science: ");
scanf("%d", &s[i].marks);
}
printf("\nROLL NO\tNAME\tMARKS");
for
(i = 0; i < 10; i++)
{
printf("\n%d\t%s\t%d", s[i].rn, s[i].name, s[i].marks);
}
getch();
}
Example Output:
Enter Roll Number: 101
Enter Name: Madhav
Enter Marks in Computer Science: 99
........
Enter Roll Number: 110
Enter Name: Sandesh
Enter Marks in Computer Science: 90
ROLL NO
NAME MARKS
101 Madhav 99
........
110 Jack 90
2081 GIE Set B Q. No. 16 Create
a structure named "player" to store details pname, game, age, and
salary. Write a C program to input details for five players and display their
information in proper format.
Ans:
#include <stdio.h>
#include <conio.h>
struct player
{
char
pname[20], game[20];
int
age, salary;
};
void main()
{
struct player p[5];
int
i;
clrscr();
for
(i = 0; i < 5; i++)
{
printf("Enter Name: ");
scanf("%s", p[i].pname);
printf("Enter Game: ");
scanf("%s", p[i].game);
printf("Enter Age: ");
scanf("%d", &p[i].age);
printf("Enter Salary: ");
scanf("%d", &p[i].salary);
}
printf("\nNAME\tGAME\tAGE\tSALARY");
for
(i = 0; i < 5; i++)
{
printf("\n%s\t%s\t%d\t%d", p[i].pname, p[i].game, p[i].age,
p[i].salary);
}
getch();
}
Example Output:
Enter Name: John
Enter Game: Cricket
Enter Age: 25
Enter Salary: 50000
………
Enter Name: David
Enter Game: Football
Enter Age: 24
Enter Salary: 55000
NAME
GAME AGE SALARY
John
Cricket 25 50000
……..
David
Football 24 55000
2081 Q. No. 16 Write
a C program that uses structures to represent details of five books (title, author,
publisher, and price) and prints them out. [8]
Ans:
#include<stdio.h>
#include<conio.h>
struct book
{
char
title[20],auth[20],pub[20];
int
price;
}
void main()
{
struct book b[5];
int
i;
clrscr();
for(i=0;i<5;i++)
{
printf("Enter Book's Title:");
scanf("%s",b[i].title);
printf("Enter Author:");
scanf("%s",b[i].auth);
printf("Enter Publisher:");
scanf("%s",b[i].pub);
printf("Enter Price:");
scanf("%d",&b[i].price);
}
printf("\nTITILE\tAUTHOR\tPUBLISHER\tPRICE");
for(i=0;i<5;i++)
{
printf("\n%s\t%s\t%s\t%d",b[i].title,b[i].auth,b[i].pub,b[i].price);
}
getch();
}
}
2080 GIE Set A Q. No. 16 What
is a structure? Write a program to store five students' information (ID, Name,
DOB, and phone) and display them using structure. [2+6]
Ans:
A structure in C is a
user-defined data type that allows grouping variables of different types under
a single name. This helps to logically organize and manage related data. It is
defined and declared using the ‘struct’ keyword followed by the structure name
and a set of curly braces.
For example:
struct Student
{
int id;
float marks;
} s1;
A program to store five students' information
(ID, Name, DOB, and phone) and display them using structure is as follows:
#include<stdio.h>
#include<conio.h>
struct student
{
int
id;
char
name[50], dob[20], phone[15];
};
void main()
{
struct student s[5];
int
i;
clrscr();
for(i = 0; i < 5; i++)
{
printf("Enter ID: ");
scanf("%d", &s[i].id);
printf("Enter Name: ");
scanf("%s", s[i].name);
printf("DOB (DD/MM/YYYY): ");
scanf("%s", s[i].dob);
printf("Phone: ");
scanf("%s", s[i].phone);
}
printf("\nID\tNAME\tDOB\tPHONE");
for(i = 0; i < 5; i++)
{
printf("\n%d\t%s\t%s\t%s", s[i].id, s[i].name, s[i].dob,
s[i].phone);
}
getch();
}
2080 GIE Set B Q. No. 16 Write a program
to store five employees' records (EID, Name, Post, and Department) and display
them using structure. [8]
Ans:
#include<stdio.h>
#include<conio.h>
struct employee
{
int
eid;
char
name[50], post[50], department[50];
};
void main()
{
struct employee emp[5];
int
i;
clrscr();
for(i = 0; i < 5; i++)
{
printf("Enter
printf("Enter EID: ");
scanf("%d", &emp[i].eid);
printf("Enter Name: ");
scanf("%s", emp[i].name);
printf("Enter Post: ");
scanf("%s", emp[i].post);
printf("Enter Department: ");
scanf("%s", emp[i].department);
}
printf("\nEID\tNAME\tPOST\tDEPARTMENT");
for(i = 0; i < 5; i++)
{
printf("\n%d\t%s\t%s\t%s", emp[i].eid, emp[i].name,
emp[i].post, emp[i].department);
}
getch();
}
2080 Q. No. 16 OR Define the structure. Write
a C program using structure to input staff ID, name, and the salary of 50
staff. Display staff ID, name, and salary of those staff whose salary ranges
from 25 thousand to 40 thousand. [2+6]
Ans:
#include<stdio.h>
#include<conio.h>
struct staff
{
char
name[20];
int
id,sal;
}
void main()
{
struct staff s[50];
int
i;
clrscr();
for(i=0;i<2;i++)
{
printf("Enter Staff Id:");
scanf("%d",&s[i].id);
printf("Enter Name:");
scanf("%s",s[i].name);
printf("Enter Salary:");
scanf("%d",&s[i].sal);
}
printf("\nID\tNAME\tSALARY");
for(i=0;i<2;i++)
{
if(s[i].sal>25000 && s[i].sal<40000)
{
printf("\n%d\t%s\t%d",s[i].id,s[i].name,s[i].sal);
}
}
getch();
}
}
2079 GIE Set A Q. No. Write
a C program to enter name, grade, age, and address of 10 students in a
structure and display the information. [8]
Ans:
#include<stdio.h>
#include<conio.h>
void main()
{
struct student
{
char name[20],grade[5],address[20];
int age;
}s[10];
int
i;
clrscr();
for(i=0;i<10;i++)
{
printf("Enter Name:");
scanf("%s",s[i].name);
printf("Enter Grade:");
scanf("%s",s[i].grade);
printf("Enter Age:");
scanf("%d",&s[i].age);
printf("Enter Address:");
scanf("%s",s[i].address);
}
printf("\nNAME\tGRADEVtAGEVtADDRESS");
for(i=0;i<10;i++)
{
printf("\n%s\t%s\t%d\t%s",s[i].name,s[i].grade,s[i].age,s[i].address);
}
getch();
}
2079 Set A Q.No. 16
What is structure? Write a program to input roll, name and age of 5 students
and display them properly using structure.
Ans:
#include <stdio.h>
#include <conio.h>
struct student
{
int
roll, age;
char
name[20];
};
void main()
{
struct student s[5];
int
i;
clrscr();
for
(i = 0; i < 5; i++)
{
printf("Enter Roll Number: ");
scanf("%d", &s[i].roll);
printf("Enter Name: ");
scanf("%s", s[i].name);
printf("Enter Age: ");
scanf("%d", &s[i].age);
}
printf("\nROLL\tNAME\tAGE\n");
for
(i = 0; i < 5; i++)
{
printf("%d\t%s\t%d\n", s[i].roll, s[i].name, s[i].age);
}
getch();
}
2079 NEB Model Q. No. 16
Develop a program in C using structure to ask the information of any 12
students with roll number, name and marks scored in sub1, sub2, and sub3. Also,
display them in proper format along with the calculation of total and
percentage. [Note: the full mark of each subject is 100]. [8]
Ans:
#include <stdio.h>
#include <conio.h>
struct student
{
int rn;
char name[20];
int sub1, sub2, sub3;
int total;
float percent;
};
void main()
{
struct student s[12];
int i;
clrscr();
for (i = 0; i < 12; i++)
{
printf("Roll
Number: ");
scanf("%d",
&s[i].rn);
printf("Name:
");
scanf("%s",
s[i].name);
printf("Marks
in Subject 1: ");
scanf("%d",
&s[i].sub1);
printf("Marks
in Subject 2: ");
scanf("%d",
&s[i].sub2);
printf("Marks
in Subject 3: ");
scanf("%d",
&s[i].sub3);
s[i].total
= s[i].sub1 + s[i].sub2 + s[i].sub3;
s[i].percent
= s[i].total / 3.0;
}
printf("\nROLLNO\tNAME\tSUB1\tSUB2\tSUB3\tTOTAL\tPERCENTAGE");
for (i = 0; i < 12; i++)
{
printf("\n%d\t%s\t%d\t%d\t%d\t%d\t%f",
s[i].rn, s[i].name, s[i].sub1,
s[i].sub2, s[i].sub3, s[i].total, s[i].percent);
}
getch();
}
[Working with File]
2079 GIE Set A Q. No. 16 OR Describe
the file handling concept in C. Write a C program to enter names and addresses
of the students and store them in a data file "student.dat". [3+5]
Ans:
File handling in C refers to the process of
creating, writing, reading, and manipulating data files on the disk using
standard library functions (file manipulation/handling functions).
While handling a file in C, it has to be
created/opened, perform read/write operations, and close the file as shown
below:
Step 1: Creating/Opening the file
Syntax:
file_pointer = fopen("file_name", "file_mode");
Example: fptr =
fopen("student.dat", "r");
Step 2: Writing data to a file
Syntax:
fprintf(file_pointer, "format_specifiers", variables);
Example:
fprintf(fptr, "%d %s", rn, name);
Step 3: Reading data from a file
Syntax:
fscanf(file_pointer, "format_specifiers", variables);
Example:
fscanf(fptr, "%d %s", &rn, name);
Step 4: Closing the file
Syntax:
fclose(file_pointer);
Example:
fclose(fptr);
A C program to enter names and addresses of
the students and store them in a data file "student.dat" is as
follows:
#include <stdio.h>
#include <conio.h>
void main()
{
char
name[50], address[100];
int
n, i;
FILE
*fptr;
clrscr();
fptr
= fopen("student.dat", "w");
printf("Enter
number of records:");
scanf("%d", &n);
for
(i = 0; i < n; i++)
{
printf("Enter name:");
scanf("%s", name);
printf("Enter address:");
scanf("%s", address);
fprintf(fptr, "\n%s\t%s", name, address);
}
fclose(fptr);
fptr
= fopen("student.dat", "r");
printf("\nNAME\tADDRESS");
while (fscanf(fptr, "%s %s", name, address) != EOF)
{
printf("\n%s\t%s", name, address);
}
fclose(fptr);
getch();
}
2080 GIE Set B Q. No. 16 OR Describe
file handling modes in C. Write a C program to create and write data into a
file. [4+4]
Ans:
In C, file handling modes define how a file is
opened and how you can interact with its contents. In other words, it specifies
the purpose of opening a file.
There are mainly six modes, these modes are
used with the fopen() function, which opens a file and returns a pointer to
that file.
The various file handling (opening) modes in C
are as follows:
1)
"r" mode (Read): "r"
mode opens an existing file for the purpose of reading only. The possible
operation is reading from the file.
2)
"w" mode (Write): "w"
mode opens a file for the purpose of writing only. The possible operation
is writing to the file.
3)
"a" mode (Append): "a"
mode opens an existing file for the purpose of appending (i.e., adding new
information at the end of file).
4)
"r+" mode (Read + Write): "r+"
mode opens an existing file for the purpose of both reading and writing.
5)
"w+" mode (Write + Read): "w+"
mode opens a file for the purpose of both writing and reading.
6)
"a+" mode (Append + Read): "a+"
mode opens an existing file for the purpose of both reading and appending.
A C program to create and write data into a
file “student.dat” is as follows:
#include<stdio.h>
#include<conio.h>
void main()
{
char
name[20];
int
rn, age;
FILE
*fptr;
clrscr();
fptr=fopen("student.dat","w");
printf("Enter name:");
scanf("%s",name);
printf("Enter rollno:");
scanf("%d",&rn);
printf("Enter age:");
scanf("%d",&age);
fprintf(fptr,"\n%s\t%d\t%d",name,rn,age);
fclose(fptr);
getch();
}
2080 GIE Set A Q. No. 16 OR
Write a program to read and write data from a file using file handling
functions. [5]
2081 GIE Set B Q. No. 16 OR
Write a C program that illustrates the use of fprintf() and fscanf() functions
of file handling. [8]
Ans:
The function fprintf() is a formatted output
function which is used to write integer, float, char, or string to a file.
Ø Syntax:
fprintf(file_pointer, "format_specifiers", list_of_variables);
Ø Example:
fprintf(fptr, "%d %s", rn, name);
Ø Explanation:
Above example writes the roll no with format specifier %d and name with format
specifier %s from a file.
The function fscanf() is a formatted input
function which is used to read integer, float, char, or string from a file.
Ø Syntax:
fscanf(file_pointer, "format_specifiers", variable_list);
Ø Example:
fscanf(fptr, "%d %s", &rn, name);
Ø Explanation:
Above example reads the roll no with format specifier %d and name with format
specifier %s from a file.
A program to read and write data from a file
using file handling functions is as follows:
(A C program that illustrates the use of
fprintf() and fscanf() functions of file handling is as follows:)
#include <stdio.h>
#include <conio.h>
void main()
{
char
name[20];
int
rn, age, i;
FILE
*fptr;
clrscr();
fptr
= fopen("student.dat", "w");
for
(i = 1; i <= 10; i++)
{
printf("Enter name: ");
scanf("%s", name);
printf("Enter roll no: ");
scanf("%d", &rn);
printf("Enter age: ");
scanf("%d", &age);
fprintf(fptr, "\n%s\t%d\t%d", name, rn, age);
}
fclose(fptr);
fptr
= fopen("student.dat", "r");
printf("\nNAME\tROLL NO\tAGE");
while (fscanf(fptr, "%s %d %d", name, &rn, &age) !=
EOF)
{
printf("\n%s\t%d\t%d", name, rn, age);
}
fclose(fptr);
getch();
}
2079 Set A Q. No. 16 OR
Write a C program to enter an ID, employee_name, and post of the employee and
store them in a data file named "emp.txt". Display each record on the
screen in an appropriate format.
Ans:
#include <stdio.h>
#include <conio.h>
void main()
{
char
employee_name[50], post[50];
int
id, n, i;
FILE
*fptr;
clrscr();
printf("Enter the number of records: ");
scanf("%d", &n);
fptr
= fopen("emp.txt", "w");
for
(i = 0; i < n; i++)
{
printf("Enter Employee ID: ");
scanf("%d", &id);
printf("Enter Employee Name: ");
scanf("%s", employee_name);
printf("Enter Employee Post: ");
scanf("%s", post);
fprintf(fptr, "\n%d\t%s\t%s", id, employee_name, post);
}
fclose(fptr);
fptr
= fopen("emp.txt", "r");
printf("\nID\tNAME\tPOST");
while (fscanf(fptr, "%d%s%s", &id, employee_name, post) !=
EOF
{
printf("\n%d\t%s\t%s", id, employee_name, post);
}
fclose(fptr);
getch();
}
2081 Q. No. 16 OR Discuss
the concept of binary file handling in C programming and explain how putw() and
getw() functions facilitate binary input/output operations. Give examples. [8]
Ans:
Binary file handling in C refers to reading
and writing data in binary format to a file.
This means in binary file handling, the data
is stored in the exact byte-for-byte format as it appears in memory, which is
different from text file handling where the data is stored as human-readable
text.
The primary functions used for binary file
handling are:
a) fread()
b) fwrite() c) putw() d) getw() e) fseek() f) rewind(), etc.
Here's a simple example that demonstrates how
to use putw() and getw() for writing and reading integers to and from a binary
file:
#include <stdio.h>
#include <conio.h>
void main() {
int
num, i;
FILE
*fptr;
clrscr();
fptr
= fopen("numbers.bin", "wb");
for
(i = 1; i <= 10; i++)
{
putw(i, fptr);
}
fclose(fptr);
fptr
= fopen("numbers.bin", "rb");
printf("Numbers in the file:\n");
for
(i = 0; i < 10; i++)
{
num = getw(fptr);
printf("%d\n", num);
}
fclose(fptr);
getch();
}
Explanation:
In this example:
- The file is opened in "wb+" mode for both writing
and reading.
- The putw() function writes 10 integers (from 1 to 10) to the
file.
- The file is reopened in "rb" mode for reading.
- The getw() function reads and prints the integers from the
file.
This should give a clear demonstration of how
putw() and getw() functions facilitate binary input/output operations.
2081 Pre-Board KMC
Write a C program to create and store name, gender, age, and mobile number of n
students in a file named “ADDRESS.DAT”. The program should display records of
students aged between 20 to 30 years and count the total number of
"Female" students.
Ans:
#include<stdio.h>
#include<conio.h>
void main()
{
char
name[50], gender, mobile[15];
int
age, n, i, fc = 0;
FILE
*fptr;
clrscr();
fptr
= fopen("ADDRESS.DAT", "w");
printf("Enter number of students: ");
scanf("%d", &n);
for
(i = 0; i < n; i++)
{
printf("Enter
Name: ");
scanf("%s",
name);
printf("Enter
Gender (M/F): ");
scanf("
%c", &gender);
printf("Enter
Age: ");
scanf("%d",
&age);
printf("Enter
Mobile Number: ");
scanf("%s",
mobile);
fprintf(fptr,
"\n%s\t%c\t%d\t%s", name, gender, age, mobile);
}
fclose(fptr);
fptr
= fopen("ADDRESS.DAT", "r");
printf("\nNAME\tGENDER\tAGE\tMOBILE");
while (fscanf(fptr, "%s %c %d %s", name, &gender,
&age, mobile) != EOF)
{
if (age >= 20 && age <= 30)
{
printf("\n%s\t%c\t%d\t%s", name,
gender, age, mobile);
}
if (gender == 'F' || gender == 'f')
{
fc=fc+1;
}
}
printf("Total number of Female students: %d", fc);
fclose(fptr);
getch();
}
2079 NEB Model Q. No. 16 OR
Demonstrate a program in C to create a data file named score.dat to store
students’ information with Reg_no, name, gender, and address. The program
should ask the user to continue or not. When finished, the program should also
display all the records in the proper format.
Ans:
#include<stdio.h>
#include<conio.h>
void main()
{
char
name[20], gender[10], address[50], ch;
int
reg_no;
FILE
*fptr;
clrscr();
fptr
= fopen("students.dat", "w");
do
{
printf("Enter Registration Number: ");
scanf("%d", ®_no);
printf("Enter Name: ");
scanf("%s", name);
printf("Enter Gender (Male/Female/Other): ");
scanf("%s", gender);
printf("Enter Address: ");
scanf("%s", address);
fprintf(fptr, "\n%d\t%s\t%s\t%s", reg_no, name, gender,
address);
printf("Do you need to enter more records (Y/N)? ");
ch = getche();
}
while (ch == 'Y' || ch == 'y');
fclose(fptr);
fptr
= fopen("students.dat", "r");
printf("\nREG NO\tNAME\tGENDER\tADDRESS");
while (fscanf(fptr, "%d%s%s%s", ®_no, name, gender,
address) != EOF)
{
printf("\n%d\t%s\t%s\t%s", reg_no, name, gender, address);
}
fclose(fptr);
getch();
}
Asmita Sample Model Q. No. 16 OR
Write a C program to open a new file and read roll-no, name, address and phone
number of students until the user says “no”, after reading the data, write it
to the file then display the content of the file.
Ans:
#include <stdio.h>
#include <conio.h>
void main()
{
char
name[50], address[100], phone[15], ch;
int
roll_no;
FILE
*fptr;
clrscr();
fptr
= fopen("students.dat", "w");
do
{
printf("Enter Roll Number: ");
scanf("%d", &roll_no);
printf("Enter Name: ");
scanf("%s", name);
printf("Enter Address: ");
scanf("%s", address);
printf("Enter Phone Number: ");
scanf("%s", phone);
fprintf(fptr, "\n%d\t%s\t%s\t%s", roll_no, name, address,
phone);
printf("Do you want to enter more records (Y/N)? ");
ch = getche();
}
while (ch == 'Y' || ch == 'y');
fclose(fptr);
fptr
= fopen("students.dat", "r");
printf("\nROLL NO\tNAME\tADDRESS\tPHONE");
while (fscanf(fptr, "%d%s%s%s", &roll_no, name, address,
phone) != EOF)
{
printf("\n%d\t%s\t%s\t%s", roll_no, name, address, phone);
}
fclose(fptr);
getch();
}
[Pointer]
2080 GIE Set A Q. No. 16 OR What
is a pointer? [3]
Ans:
In C programming, a pointer is a variable
that stores the memory address of another variable. Instead of holding data
directly, it holds the address of the variable where the data is stored.
Key Points about Pointers:
1) Declaration: A pointer is declared by
placing an asterisk * before the pointer variable name.
Syntax:
dataType *pointerName;
Example:
int *ptr;
This declares a pointer ptr that can point to
an integer variable.
2) Initialization: A pointer is
initialized with the address of a variable using the address-of operator &.
Example:
int x = 10;
int *ptr = &x;
Here, ptr holds the address of x.
3) Dereferencing: The value at the memory
address pointed to by the pointer can be accessed using the dereference
(indirection) operator *.
Example:
This prints the value of x, which is 10.
2080 Q. No. 16 Write
the advantage of a pointer. [3]
Ans:
In C programming, a pointer is a
variable that stores the memory address of another variable. Instead of holding
data directly, it holds the address of the variable where the data is stored.
Some advantages of using pointers in C
programming are as follows:
a) Efficient Memory Management: Allows direct
access to memory for dynamic allocation and deallocation.
b) Pass-by-Reference: Enables functions to
modify actual variable values, improving performance.
c) Dynamic Data Structures: Essential for
creating and managing structures like linked lists and trees.
d) Memory Sharing: Allows multiple parts of a
program to share and manipulate the same data.
e) Faster Array Access
f) Interfacing with Hardware
2081 GIE Set A Q. No. 16.b
Write a C program to find the product of two numbers using a pointer. [4]
Ans:
#include <stdio.h>
#include <conio.h>
void main()
{
int
a, b, *ptr1, *ptr2, p;
clrscr();
printf("Enter first number:");
scanf("%d", &a);
printf("Enter second number:");
scanf("%d", &b);
ptr1
= &a;
ptr2
= &b;
p =
(*ptr1) * (*ptr2);
printf("The product of two numbers is: %d", p);
getch();
}
Example Output:
Enter first number: 5
Enter second number: 10
The product of two numbers is: 50
Out Of Syllabus 2078 NEB Model Q 1)
Write a program to enter ten integer numbers into an array, sort and display
them in ascending order. [Only for A+ Students]
Ans:
#include <stdio.h>
#include <conio.h>
void main()
{
int
arr[10], i, j, temp;
clrscr();
printf("Enter 10 integers:\n");
for
(i = 0; i < 10; i++) {
scanf("%d", &arr[i]);
}
for
(i = 0; i < 9; i++)
{
for (j = 0; j < 9 - i; j++)
{
if (arr[j] > arr[j + 1])
{
temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
printf("\nSorted numbers in ascending order:\n");
for
(i = 0; i < 10; i++) {
printf("%d ", arr[i]);
}
getch();
}
Out Of Syllabus 2078 NEB Model Q 2)
Write a program to read the marks of any 5 students in a subject and count how
many students are pass and fail. [Only for A+ Students]
Ans:
#include <stdio.h>
#include <conio.h>
void main()
{
int
marks[5], i, pass = 0, fail = 0;
clrscr();
printf("Enter the marks of 5 students:\n");
for
(i = 0; i < 5; i++)
{
scanf("%d", &marks[i]);
if (marks[i] >= 40)
{
pass=pass+1;
} else {
fail=fail+1;
}
}
printf("\nNumber of students who passed: %d", pass);
printf("\nNumber of students who failed: %d", fail);
getch();
}
posted by Computer with Madhav @ March 08, 2025
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