sqrt() - math.h

The C library function double sqrt(double x) returns the square root of x.

Syntax

double sqrt(double x)

Example

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

int main ()
{

   printf("Square root of %lf is %lf\n", 4.0, sqrt(4.0) );
   printf("Square root of %lf is %lf\n", 5.0, sqrt(5.0) );
   
   return(0);
}

Output / Return Value

Square root of 4.000000 is 2.000000
Square root of 5.000000 is 2.236068

Limitations

Alternatives / See Also

Reference