math.h

作用:

Calculates x raised to the power of y.

函数原型:

double pow( double x, double y );

Compatibility: ANSI

Return Value: pow returns the value of $x^y$. No error message is printed on overflow or underflow.

Parameters

x: Base
y: Exponent

特殊的 x 和 y 的返回值：

程序示例：

#include<stdio.h>
#include<math.h>
int main(void)
{
	double x = 2.0, y = 3.0;
	printf("%.1f to the power of %.1f is %.1f.\n", x, y, pow(x, y));
 
	return 0;
}

结果：

2.0 to the power of 3.0 is 8.0.