In this post, we will learn how to find square root of a number using the C Programming language.
A Square root of a number is a value that, when multiplied by itself, gives the number. For example: 5 x 5 = 25, so the square root of 25 is 5.
We will be calculating the square root of any number entered by the user.
So, without further ado, let’s begin this tutorial.
C Program To Find Square Root of a Number
// C Program To Find Square Root of a Number
#include <stdio.h>
#include <math.h>
int main(){
double num, root;
// Asking for Input
printf("Enter an integer: ");
scanf("%lf", &num);
root = sqrt(num);
printf("The Square Root of %.2lf is %.2lf.", num, root);
return 0;
}
Output
Enter an integer: 2
The Square Root of 2.00 is 1.41.
How Does This Program Work ?
double num, root;
In this program, we have declared two double data type variables named num and root.
// Asking for Input
printf("Enter an integer: ");
scanf("%lf", &num);
Then, the user is asked to enter the value of a number. The value of this number will get stored in the num named variable.
root = sqrt(num);
We calculate the square root of the number using sqrt() function. sqrt() function is used to find the square root of the given number.
printf("The Square Root of %.2lf is %.2lf.", num, root);Finally, the square root of the entered number is printed to the screen using printf() function. Here, we have used %.2lf format specifier, because we want to display the result only till 2 decimal places.
C Program To Find Square Root of a Number Without Using sqrt
// C Program To Find The Square Root of a Number Without Using Sqrt
#include <stdio.h>
#include <math.h>
int main(){
double num, root;
// Asking for Input
printf("Enter a number: ");
scanf("%lf", &num);
root = pow(num, 0.5);
printf("The Square Root of %.2lf is %.2lf.", num, root);
return 0;
}
Output
Enter a number: 49
The Square Root of 49.00 is 7.00.
Conclusion
I hope after going through this post, you learn how to find square root of a number in the C Programming language.
If you have any doubt regarding the program, feel free to contact us in the comment section. We will be delighted to help you.
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I want input