C代码解读一下,谢谢

来源:百度知道 编辑:UC知道 时间:2024/05/25 00:46:12
// power.c -- raises numbers to integer powers
#include <stdio.h>
double power(double n, int p); // ANSI prototype
int main(void)
{
double x, xpow;
int exp;

printf("Enter a number and the positive integer power");
printf(" to which\nthe number will be raised. Enter q");
printf(" to quit.\n");
while (scanf("%lf%d", &x, &exp) == 2)
{
xpow = power(x,exp); // function call
printf("%.3g to the power %d is %.5g\n", x, exp, xpow);
printf("Enter next pair of numbers or q to quit.\n");
}
printf("Hope you enjoyed this power trip -- bye!\n");

return 0;
}

double power(double n, int p)
{
double pow = 1;
int i;

for (i = 1; i <= p; i++)
pow *= n;

retu

程序为输入两个数,第二个数为第一个数的次方,比如: n . p 就是n的p次方.然后计算第一个数的的p次方,p为第二个数.
double power(double n, int p)
{
double pow = 1;
int i;

for (i = 1; i <= p; i++) //p次方,n在这循环p次.
pow *= n;

return pow; //pow为n的p次方的值.
}