Using pow() and sqrt() functions

/* 0905.c: Using pow() and sqrt() functions */
#include <stdio.h>
#include <math.h>

main()
{
    double x, y, z;

    x = 64.0;
    y = 3.0;
    z = 0.5;
    printf("pow(64.0, 3.0) returns: %7.0f\n", pow(x, y));
    printf("sqrt(64.0) returns: %2.0f\n", sqrt(x));
    printf("pow(64.0, 0.5) returns: %2.0f\n", pow(x, z));
    return 0;
}