这个C++程序为什么没有输出

2025-03-15 15:47:43
推荐回答(6个)
回答(1):

没有输出的原因有好几个:
1)int b=2; for(int b=2;b<=a;b++) 在VC6.0 中会报重复定义。
2)e 没有初始化,以后也没有赋值。
3)循环中的条件错误,应该是c另外,你的代码写的也不规范,我把他从写了一下,你将 a 的值输为100就能看到输出了。
#include

int main(void)
{
using namespace std;
double power(double x, int n);

int a;
cin>>a;
int b, c, d, e;
int bcubed, ccubed, dcubed, ecubed;
b = c = d = e = 2;
for(b=2; b<=a; b++)
{
bcubed = power(b, 3);
for (c=2; c {
ccubed = power(c, 3);
for (d=2; d {
dcubed = power(d, 3);
for (e=2; e {
ecubed = power(e, 3);
if (ccubed + dcubed + ecubed == bcubed)
cout<<"Cube="< }
}
}
}

return 0;
}

double power(double x, int n)
{
double result = 1.0;

for(int i=0; i result *= x;

return result;
}

回答(2):

if(addtion==bcubed) 不成立,所以不执行输出
想一想:
在for循环的条件里 c>b,d>b,e>b
b^3=c^3+d^3+c^3这个式子怎么可能成立?

应该是c

回答(3):

for(int b=2;b<=a;b++)
{
int bcubed;
bcubed=power(b,3);
for(int c=2;c>b;c++)

这里b最小就是2了,c刚开始也是毛球,c>b永远不可能满足呃,自然无法运行到输出的地方了。

回答(4):

程序错误:1. int b=2;
for(int b=2;b<=a;b++) //去掉for中的int,否则b重复定义
修改完错误1,程序可以运行,但是运行结果错误
程序错误:2. double power(double x, int n)
{
n=3; //你这一句多余的话,使得函数传入的n成为无用的东西,每次n都是3还传个P啊
double result(1.0);
for(int i=1;i<=n;i++)
result*=x;//result*??这是什么,实数赋值还搞什么
return result;
}
修改到这儿,我对楼主已经佩服的不行了,建议你把这个彻底删除,重新写,完全没有必要改,重新写绝对比改这个轻松

回答(5):

你的e没有初始化啊

回答(6):

你是指不能运行,程序有错误,还是指没有出现输出框?

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