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1. Write a C program to print the message “Welcome to C programming”2. Write a program to print first 13 odd numbers3. Write a C program to input a number and print the square of a number.4. Write a C program to input a number and print the cube of a number.5. Write a C program to input a number and print the square and cube of a number.6. Write a C program to input two numbers and find the sum of the numbers.7. Write a C program to input two numbers and find the product of the numbers.8. Write a C program to input two numbers and find the sum, product and difference of the numbers.9. Write a program in C to input a length and find the area and perimeter of square.10. Write a program in C to input length and breadth and find the area and perimeter of rectangle. 11. Write a program in C to input length, breadth and height and find the volume of box.12. Write a program in C to input base and height and find the area of triangle.13. Write a program in C to input principle, rate and time and calculate simple interest.14. Write a program in C to input radius and find the area of circle (with #define also).15. Write a program in C to input radius and find the circumference of circle (with #define ).16. Write a program in C to input the diameter and find the area and circumference of the circle. (with #define also)17. Write a program in C to input radius and height and find the volume of cylinder. (with #define also)18. Using sqrt function find the square root of an input number.19. Using pow function find the square and cube of an input number.20. Write a program to ask if a number is a perfect number or not.21. Using sqrt and pow function find the square root and cube root of a number.22. Write a program in C to input velocity, acceleration and time and calculate distance. s = ut + ½at223. Write a program in C to input three sides of a triangle and calculate area of triangle s=(a+b+c)/2 area = √s × (s – a) × (s – b) × (s – c) 24. Write a program in C to input length, breadth and height and find the area of four walls.25. Write a program in C to input three angles of a triangle and find whether the triangle is an isosceles triangle, right angled triangle, equilateral triangle or scalene triangle.26. Write a program to find prime numbers between two numbers.27. Write a program to ask any number and print the first ten multiples of the ask number.28. Write a program to input the age of a person and find out whether the person is eligible to vote or not.29. Write a program to input a mark in a subject of a student and check if the student has passed or not.30. Write a program to print H.C.F of a given any two numbers.
1. Write a C program to print the message “Welcome to C programming”
#include <stdio.h>
int main() {
printf("Welcome to C programming\n");
return 0;
}2. Write a program to print first 13 odd numbers
#include <stdio.h>
int main() {
for (int i = 1; i <= 25; i += 2) {
printf("%d ", i);
}
return 0;
}
3. Write a C program to input a number and print the square of a number.
#include <stdio.h>
int main() {
int number;
printf("Enter a number: ");
scanf("%d", &number);
int square = number * number;
printf("The square of %d is: %d\n", number, square);
return 0;
}4. Write a C program to input a number and print the cube of a number.
#include <stdio.h>
int main() {
int number;
printf("Enter a number: ");
scanf("%d", &number);
int cube = number * number * number;
printf("The cube of %d is: %d\n", number, cube);
return 0;
}5. Write a C program to input a number and print the square and cube of a number.
#include <stdio.h>
int main() {
int number;
printf("Enter a number: ");
scanf("%d", &number);
int square = number * number;
int cube = number * number * number;
printf("The square of %d is: %d\n", number, square);
printf("The cube of %d is: %d\n", number, cube);
return 0;
}6. Write a C program to input two numbers and find the sum of the numbers.
#include <stdio.h>
int main() {
int num1, num2;
printf("Enter first number: ");
scanf("%d", &num1);
printf("Enter second number: ");
scanf("%d", &num2);
int sum = num1 + num2;
printf("The sum of %d and %d is: %d\n", num1, num2, sum);
return 0;
}7. Write a C program to input two numbers and find the product of the numbers.
#include <stdio.h>
int main() {
int num1, num2;
printf("Enter first number: ");
scanf("%d", &num1);
printf("Enter second number: ");
scanf("%d", &num2);
int product = num1 * num2;
printf("The product of %d and %d is: %d\n", num1, num2, product);
return 0;
}8. Write a C program to input two numbers and find the sum, product and difference of the numbers.
#include <stdio.h>
int main() {
int num1, num2;
printf("Enter first number: ");
scanf("%d", &num1);
printf("Enter second number: ");
scanf("%d", &num2);
int sum = num1 + num2;
int product = num1 * num2;
int difference = num1 - num2;
printf("Sum: %d\n", sum);
printf("Product: %d\n", product);
printf("Difference: %d\n", difference);
return 0;
}
9. Write a program in C to input a length and find the area and perimeter of square.
#include <stdio.h>
int main() {
float length, area, perimeter;
printf("Enter the length of the square: ");
scanf("%f", &length);
area = length * length;
perimeter = 4 * length;
printf("Area of the square: %.2f\n", area);
printf("Perimeter of the square: %.2f\n", perimeter);
return 0;
}10. Write a program in C to input length and breadth and find the area and perimeter of rectangle.
#include <stdio.h>
int main() {
float length, breadth, area, perimeter;
printf("Enter the length of the rectangle: ");
scanf("%f", &length);
printf("Enter the breadth of the rectangle: ");
scanf("%f", &breadth);
area = length * breadth;
perimeter = 2 * (length + breadth);
printf("Area of the rectangle: %.2f\n", area);
printf("Perimeter of the rectangle: %.2f\n", perimeter);
return 0;
}11. Write a program in C to input length, breadth and height and find the volume of box.
#include <stdio.h>
int main() {
float length, breadth, height, volume;
printf("Enter the length of the box: ");
scanf("%f", &length);
printf("Enter the breadth of the box: ");
scanf("%f", &breadth);
printf("Enter the height of the box: ");
scanf("%f", &height);
volume = length * breadth * height;
printf("Volume of the box: %.2f\n", volume);
return 0;
}12. Write a program in C to input base and height and find the area of triangle.
#include <stdio.h>
int main() {
float base, height, area;
printf("Enter the base of the triangle: ");
scanf("%f", &base);
printf("Enter the height of the triangle: ");
scanf("%f", &height);
area = 0.5 * base * height;
printf("Area of the triangle: %.2f\n", area);
return 0;
}13. Write a program in C to input principle, rate and time and calculate simple interest.
#include <stdio.h>
int main() {
float principle, rate, time, simple_interest;
printf("Enter the principle amount: ");
scanf("%f", &principle);
printf("Enter the rate of interest: ");
scanf("%f", &rate);
printf("Enter the time (in years): ");
scanf("%f", &time);
simple_interest = (principle * rate * time) / 100;
printf("Simple interest: %.2f\n", simple_interest);
return 0;
}14. Write a program in C to input radius and find the area of circle (with #define also).
#include <stdio.h>
#define PI 3.14159
int main() {
float radius, area;
printf("Enter the radius of the circle: ");
scanf("%f", &radius);
area = PI * radius * radius;
printf("Area of the circle: %.2f\n", area);
return 0;
}15. Write a program in C to input radius and find the circumference of circle (with #define ).
#include <stdio.h>
#define PI 3.14159
int main() {
float radius, circumference;
printf("Enter the radius of the circle: ");
scanf("%f", &radius);
circumference = 2 * PI * radius;
printf("Circumference of the circle: %.2f\n", circumference);
return 0;
}
16. Write a program in C to input the diameter and find the area and circumference of the circle. (with #define also)
#include <stdio.h>
#define PI 3.14159
int main() {
float diameter, radius, area, circumference;
printf("Enter the diameter of the circle: ");
scanf("%f", &diameter);
radius = diameter / 2;
area = PI * radius * radius;
circumference = PI * diameter;
printf("Area of the circle: %.2f\n", area);
printf("Circumference of the circle: %.2f\n", circumference);
return 0;
}17. Write a program in C to input radius and height and find the volume of cylinder. (with #define also)
#include <stdio.h>
#include <math.h>
#define PI 3.14159
int main() {
float radius, height, volume;
printf("Enter the radius of the cylinder: ");
scanf("%f", &radius);
printf("Enter the height of the cylinder: ");
scanf("%f", &height);
volume = PI * pow(radius, 2) * height;
printf("Volume of the cylinder: %.2f\n", volume);
return 0;
}18. Using sqrt function find the square root of an input number.
#include <stdio.h>
#include <math.h>
int main() {
float number, squareRoot;
printf("Enter a number: ");
scanf("%f", &number);
squareRoot = sqrt(number);
printf("Square root of %.2f is: %.2f\n", number, squareRoot);
return 0;
}19. Using pow function find the square and cube of an input number.
#include <stdio.h>
#include <math.h>
int main() {
float number, square, cube;
printf("Enter a number: ");
scanf("%f", &number);
square = pow(number, 2);
cube = pow(number, 3);
printf("Square of %.2f is: %.2f\n", number, square);
printf("Cube of %.2f is: %.2f\n", number, cube);
return 0;
}
20. Write a program to ask if a number is a perfect number or not.
#include <stdio.h>
int isPerfect(int num) {
int sum = 0;
for (int i = 1; i <= num / 2; i++) {
if (num % i == 0) {
sum += i;
}
}
return sum == num;
}
int main() {
int num;
printf("Enter a number: ");
scanf("%d", &num);
if (isPerfect(num)) {
printf("%d is a perfect number.\n", num);
} else {
printf("%d is not a perfect number.\n", num);
}
return 0;
}21. Using sqrt and pow function find the square root and cube root of a number.
#include <stdio.h>
#include <math.h>
int main() {
float number, squareRoot, cubeRoot;
printf("Enter a number: ");
scanf("%f", &number);
squareRoot = sqrt(number);
cubeRoot = cbrt(number);
printf("Square root of %.2f is: %.2f\n", number, squareRoot);
printf("Cube root of %.2f is: %.2f\n", number, cubeRoot);
return 0;
}22. Write a program in C to input velocity, acceleration and time and calculate distance. s = ut + ½at2
#include <stdio.h>
int main() {
float velocity, acceleration, time, distance;
printf("Enter velocity (u): ");
scanf("%f", &velocity);
printf("Enter acceleration (a): ");
scanf("%f", &acceleration);
printf("Enter time (t): ");
scanf("%f", &time);
distance = velocity * time + 0.5 * acceleration * time * time;
printf("Distance traveled: %.2f\n", distance);
return 0;
}23. Write a program in C to input three sides of a triangle and calculate area of triangle s=(a+b+c)/2 area = √s × (s – a) × (s – b) × (s – c)
#include <stdio.h>
#include <math.h>
int main() {
float a, b, c, s, area;
printf("Enter the length of side 'a': ");
scanf("%f", &a);
printf("Enter the length of side 'b': ");
scanf("%f", &b);
printf("Enter the length of side 'c': ");
scanf("%f", &c);
s = (a + b + c) / 2;
area = sqrt(s * (s - a) * (s - b) * (s - c));
printf("Area of the triangle: %.2f\n", area);
return 0;
}24. Write a program in C to input length, breadth and height and find the area of four walls. [area=2h(l+b)]
#include <stdio.h>
int main() {
float length, breadth, height, area;
printf("Enter the length of the room: ");
scanf("%f", &length);
printf("Enter the breadth of the room: ");
scanf("%f", &breadth);
printf("Enter the height of the room: ");
scanf("%f", &height);
area = 2 * height * (length + breadth);
printf("Area of the four walls: %.2f\n", area);
return 0;
}
25. Write a program in C to input three angles of a triangle and find whether the triangle is an isosceles triangle, right angled triangle, equilateral triangle or scalene triangle.
#include <stdio.h>
int main() {
float angle1, angle2, angle3;
printf("Enter the first angle: ");
scanf("%f", &angle1);
printf("Enter the second angle: ");
scanf("%f", &angle2);
printf("Enter the third angle: ");
scanf("%f", &angle3);
if (angle1 + angle2 + angle3 == 180) {
if (angle1 == 90 || angle2 == 90 || angle3 == 90)
printf("Right-angled triangle\n");
else if (angle1 == angle2 && angle2 == angle3)
printf("Equilateral triangle\n");
else if (angle1 == angle2 || angle2 == angle3 || angle1 == angle3)
printf("Isosceles triangle\n");
else
printf("Scalene triangle\n");
} else {
printf("Invalid triangle angles\n");
}
return 0;
}26. Write a program to find prime numbers between two numbers.
#include <stdio.h>
int isPrime(int num) {
if (num < 2) return 0;
for (int i = 2; i <= num / 2; i++) {
if (num % i == 0) {
return 0;
}
}
return 1;
}
int main() {
int start, end;
printf("Enter the range (two numbers separated by space): ");
scanf("%d %d", &start, &end);
printf("Prime numbers between %d and %d are: ", start, end);
for (int i = start; i <= end; i++) {
if (isPrime(i)) {
printf("%d ", i);
}
}
return 0;
}27. Write a program to ask any number and print the first ten multiples of the ask number.
#include <stdio.h>
int main() {
int num;
printf("Enter a number: ");
scanf("%d", &num);
printf("First ten multiples of %d are: ", num);
for (int i = 1; i <= 10; i++) {
printf("%d ", num * i);
}
return 0;
}
28. Write a program to input the age of a person and find out whether the person is eligible to vote or not.
#include <stdio.h>
int main() {
int age;
printf("Enter the marks: ");
scanf("%d", &age);
if (age >= 18) {
printf("Congratulations! You are eligible to vote.\n");
} else {
printf("Sorry, you are not eligible to vote.\n");
}
return 0;
}29. Write a program to input a mark in a subject of a student and check if the student has passed or not.
#include <stdio.h>
int main() {
int marks;
printf("Enter the marks: ");
scanf("%d", &marks);
if (marks >= 40) {
printf("Congratulations! You have passed.\n");
} else {
printf("Sorry, you have not passed.\n");
}
return 0;
}
30. Write a program to print H.C.F of a given any two numbers.
#include <stdio.h>
int findHCF(int a, int b) {
while (a != b) {
if (a > b) {
a -= b;
} else {
b -= a;
}
}
return a;
}
int main() {
int num1, num2;
printf("Enter two numbers: ");
scanf("%d %d", &num1, &num2);
printf("H.C.F. of %d and %d is: %d\n", num1, num2, findHCF(num1, num2));
return 0;
}