函数名: pow10
功  能: 指数函数(10的p次方)
用  法: double pow10(int p);
程序例:

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

int main(void)
{
   double p = 3.0;

   printf("Ten raised to %lf is %lf\n", p, pow10(p));
   return 0;
}

函数名: pow
功  能: 指数函数(x的y次方)
用  法: double pow(double x, double y);
程序例:

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

int main(void)
{
   double x = 2.0, y = 3.0;

   printf("%lf raised to %lf is %lf\n", x, y, pow(x, y));
   return 0;
}

好了,现在没问题了...