C program to find square root of a number

Write a C program to input a number and find square root of the given number. How to find square root of a number in C programming using inbuilt sqrt() function. How to use predefined sqrt() function to find square root in C program.


Enter any number: 9


Square root of 9 = 3

Required knowledge

Data types, Basic input/output

Program to find square root of any number

 * C program to find square root of a number

#include <stdio.h>
#include <math.h>

int main()
    double num, root;

    /* Input a number from user */
    printf("Enter any number to find square root: ");
    scanf("%lf", &num);

    /* Calculate square root of num */
    root = sqrt(num);

    /* Print the resultant value */
    printf("Square root of %.2lf = %.2lf", num, root);

    return 0;


Enter any number to find square root: 144
Square root of 144.00 = 12.00

Happy coding 😉

About Pankaj

Pankaj Prakash is the founder, editor and blogger at Codeforwin. He loves to learn new techs and write programming articles especially for beginners. He works at Vasudhaika Software Sols as a Software Design Engineer and manages Codeforwin. In short Pankaj is Web developer, Blogger, Learner, Tech and Music lover.

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