pow

The pow function calculates x raised to the y^th power.

The pow function returns the value x^y.

• If x != 0 and y = 0, pow returns a value of 1.
• If x = 0 and y <= 0, pow returns NaN.
• If x < 0 and y is not an integer, pow returns NaN.

sqrt

#include <math.h>
#include <stdio.h> /* for printf */

void tst_pow (void) {
  float base;
  float power;
  float y;

  base = 2.0;
  power = 8.0;

  y = pow (base, power); /* y = 256 */

  printf ("%f ^ %f = %f\n", base, power, y);
}