C Programming Practical Questions with solutions| C Programming Exercises, Practice, Solution

1. Write a C Program to print Welcome to C Programming.

#include<stdio.h>

int main()

{

printf(“Welcome to C Programming”);

return 0;

}

Output:

Welcome to C Programming

2. Write a program in C to print the following:

Welcome to C Programming

It is invented by Denis Ritche

It is portable, flexible and versatile

#include<stdio.h>

int main()

{

printf(“Welcome to C Programming”);

printf(“\nIt is invented by Denis Ritche”);

printf(“\nIt is portable, flexible and versatile”);

return 0;

}

Output:

Welcome to C Programming

It is invented by Denis Ritche

It is portable, flexible and versatile

3. Write a C program to print the following:

Welcome to

             C Programming

Invented by

          Denis Ritche

#include<stdio.h>

int main()

{

          printf(“Welcome to”);

          printf(“\n\tC Programming”);

          printf(“\nInvented by”);

          printf(“\n\tDenis Ritche”);

          return 0;

}

Output:

Welcome to

        C Programming

Invented by

        Denis Ritche

4. Write a C program to print the sum of two numbers.

      OR

Write a program in C to add two numbers.

#include<stdio.h>

int main()

{

          int n1,n2,result;

          num1=10;

          num2=8;

          result=n1+n2;

          printf(“Result: %d”,result);

          return 0;

}

OR

#include<stdio.h>

int main()

{

          int n1=10,n2=8,result;

          printf(“Result: %d”,n1+n2);

          return 0;

}

Output:

Result: 18

5. Write a C program to add two numbers taking input from user.

#include<stdio.h>

int main()

{

          int n1,n2,result;

          printf(“Enter 1st number: “);

          scanf(“%d”,&n1);

          printf(“Enter 2nd number: “);

          scanf(“%d”,&n2);

          result=n1+n2;

          printf(“Result: %d”,result);

          return 0;

}

Output:

Enter 1st number: 34

Enter 2nd number: 45

Result: 79

OR

#include<stdio.h>

int main()

{

          int n1,n2,result;

          printf(“Enter two numbers: “);

          scanf(“%d%d”,&n1,&n2);

          printf(“Result: %d”,n1+n2);

          return 0;

}

Output:

Enter two numbers: 34 45

Result: 79

6. Write a C program to display sum and difference of two numbers.

#include<stdio.h>

int main()

{

          int n1=10,n2=7;

          printf(“Sum: %d”,n1+n2);

          printf(“\nDifference: %d”,n1-n2);

          return 0;

}

Output:

Sum: 17

Difference: 3

OR

#include<stdio.h>

int main()

{

          int n1,n2;

          printf(“Enter two numbers: “);

          scanf(“%d%d”,&n1,&n2);

          printf(“Sum: %d”,n1+n2);

          printf(“\nDifference: %d”,n1-n2);

          return 0;

}

Output:

Enter two numbers: 34 23

Sum: 57

Difference: 11

7. Write   a program in C to store two integer values in two variables and using them calculate addition, subtraction, multiplication and division.

#include<stdio.h>

int main()

{

 int n1,n2;

printf(“Enter two integer values: “);

 scanf(“%d%d”,&n1,&n2);

printf(“Addition= %d”,n1+n2);

printf(“\nSubtraction= %d”,n1-n2);

printf(“\nMultiplication= %d”,n1*n2);

printf(“\nDivision= %d”,n1/n2);

return 0;  

}

Output:

Enter two integer values: 56 34

Addition= 90

Subtraction= 22

Multiplication= 1904

Division= 1

8. Write a program in C to find the average of three numbers.

#include<stdio.h>

int main()

{

          int n1,n2,n3;

          float avg;

          printf(“Enter three numbers: “);

          scanf(“%d%d%d”,&n1,&n2,&n3);

          avg=(n1+n2+n3)/3.0;

          printf(“Average: %.2f”,avg);

          return 0;  

}

Output:

Enter three numbers: 4 6 7

Average: 5.67

9. Write a C program to calculate the square of a number.

#include<stdio.h>

int main()

{

int num,square;

printf(“Enter a number: “);

scanf(“%d”,&num);

square=num*num;

printf(“Square of %d is %d”, num, square);

return 0;  

}

Output:

Enter a number: 7

Square of 7 is 49

10. Write a program in C to convert Rupees into Paisa.

OR

Write a C program to read the price of an item in rupees in decimal format and prints the output in paisa.

OR

Write a C program to read a price of an item in (float) like 10.25 and print output in (int) paisa like1025.

OR

Make a program in C to enter the amount in Rupees and print into paisa.

#include<stdio.h>

int main()

{

float rs;

int ps;

printf(“Enter price of the item in Rupees: “);

scanf(“%f”,&rs);

ps=rs*100;

printf(“Price of the item in Paisa: %d”, ps);

return 0;  

}

Output:

Enter price of the item in Rupees: 20.50

Price of the item in Paisa: 2050

11. Write a program in C to find the distance travelled in miles given the speed and time. The speed is 4.5 MPH and time is 2.1 sec.

#include<stdio.h>

int main()

{

float speed,time,distance;

speed=4.5;

time=2.1;

distance=speed*time;

printf(“The distance travelled is:%.2f”,distance);

return 0;  

}

Output:

The distance travelled is:9.45

12. Write a C program to find the Kinetic Energy of a particle. Given the Mass and Velocity as 14 and 3.

#include<stdio.h>

int main()

{

          float m=14,v=3,KE;

          KE=(m*v*v)/2;

          printf(“Kinetic Energy:%.3f”,KE);

          return 0;  

}

Output:

Kinetic Energy:63.000

13. Write a program in C to calculate Kinetic Energy of a particle.

#include<stdio.h>

int main()

{

          float m,v,KE;

          printf(“Enter the mass: “);

          scanf(“%f”,&m);

          printf(“Enter the velocity: “);

          scanf(“%f”,&v);

          KE=(m*v*v)/2;

          printf(“Kinetic Energy:%.3f”,KE);

          return 0;  

}

Output:

Enter the mass: 25

Enter the velocity: 5

Kinetic Energy:312.500

14. Write a C program to calculate total marks and percentage of 5 subjects of a student.

#include<stdio.h>

int main()

{

int eng,math,phy,chem,csc;

float total, percentage;

printf(“Enter english marks: “);

scanf(“%d”,&eng);

printf(“Enter maths marks: “);

scanf(“%d”,&math);

printf(“Enter physics marks: “);

scanf(“%d”,&phy);

printf(“Enter chemistry marks: “);

scanf(“%d”,&chem);

printf(“Enter computer science marks: “);

scanf(“%d”,&csc);

total=eng+math+phy+chem+csc;

printf(“———————————“);

printf(“\nTotal marks obtained: %.2f”,total);

percentage=(total/500)*100;

printf(“\nPercentage: %.2f”,percentage);

return 0;  

}

Output:

Enter english marks: 67

Enter maths marks: 78

Enter physics marks: 85

Enter chemistry marks: 87

Enter computer science marks: 92

———————————

Total marks obtained: 409.00

Percentage: 81.80

OR

#include<stdio.h>

int main()

{

int eng,math,phy,chem,csc;

float total,percentage;

printf(“Enter marks of 5 subjects: “);

scanf(“%d%d%d%d%d”,&eng,&math,&phy,&chem,&csc);

total=eng+math+phy+chem+csc;

printf(“———————————“);

printf(“\nTotal marks obtained: %.2f”,total);

percentage=(total/500)*100;

printf(“\nPercentage: %.2f”,percentage);

return 0;  

}

Output:

Enter marks of 5 subjects: 55 65 45 70 85

———————————

Total marks obtained: 320.00

Percentage: 64.00

15. Write a program in C to input name and marks of the student and print the statement of marks.

#include<stdio.h>

int main()

{

int eng,math,sc;

float total,percentage;

char name[20];

printf(“Enter name of the student: “);

 //scanf(“%s”,name);

gets(name);

printf(“Enter english marks: “);

scanf(“%d”,&eng);

printf(“Enter maths marks: “);

scanf(“%d”,&math);

printf(“Enter science marks: “);

scanf(“%d”,&sc);

total=eng+math+sc;

percentage=(total/300)*100;

printf(“—————————“);

printf(“\nName: %s”,name);

printf(“\nEnglish marks: %d”,eng);

printf(“\nMaths marks: %d”,math);

printf(“\nScience marks: %d”,sc);

printf(“\n—————————“);

printf(“\nTotal marks obtained: %.2f”,total);

printf(“\nPercentage: %.2f”,percentage);

return 0;  

}

Output:

Enter name of the student: Pramila Barla

Enter english marks: 78

Enter maths marks: 67

Enter science marks: 85

—————————

Name: Promila Barla

English marks: 78

Maths marks: 67

Science marks: 85

—————————

Total marks obtained: 230.00

Percentage: 76.67