# C Exercises: Find the square of any number

## C Function : Exercise-2 with Solution

Write a program in C to find the square of any number using the function.
Test Data :
Input any number for square : 20
Expected Output :

The square of 20 is : 400.00

C Code:

#include <stdio.h>

double square(double num)
{
return (num * num);
}
int main()
{
int num;
double n;
printf("\n\n Function : find square of any number :\n");
printf("------------------------------------------------\n");

printf("Input any number for square : ");
scanf("%d", &num);
n = square(num);
printf("The square of %d is : %.2f\n", num, n);
return 0;
}

C Practice online:

#include <stdio.h>

double square(double num)
{
return (num * num);
}
int main()
{
int num;
double n;
printf("\n\n Function : find square of any number :\n");
printf("------------------------------------------------\n");

printf("Input any number for square : ");
scanf("%d", &num);
n = square(num);
printf("The square of %d is : %.2f\n", num, n);
return 0;
}

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