C Program to Find Square Root of a Number using sqrt Function

• Write a c program to read a number and find square root using sqrt function.

Required Knowledge

• C printf and scanf functions
• sqrt function of math.h library

We will first take a number as input from user using scanf function then calculate square root of number by calling sqrt function of math.h header file.

C program to find square root of a number

/*
* C program to calculate square root of a number 
* using sqrt function
*/
#include <stdio.h>
#include <math.h>
  
int main () {
    double x, result;
    printf("Enter a number\n");
    scanf("%lf", &x);
    
    result = sqrt(x);
    printf("Square root of %lf = %lf\n", x, result);
    
    return 0;
}

Output

Enter a number
49
Square root of 49.000000 = 7.000000

Enter a number
85.453
Square root of 85.453000 = 9.244079