The C library function double sqrt(double x) returns the square root of x.
Following is the declaration for sqrt() function.
double sqrt(double x)
x − This is the floating point value.
This function returns the square root of x.
The following example shows the usage of sqrt() function.
#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); }
Let us compile and run the above program that will produce the following result −
Square root of 4.000000 is 2.000000 Square root of 5.000000 is 2.236068