我在 vc++ 上抄了，可是不行呢。
题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？
1.程序分析：可填在百位、十位、个位的数字都是1、2、3、4。组成所有的排列后再去
　　　　　　掉不满足条件的排列。
2.程序源代码：
main()
{
int i,j,k;
printf("\n");
for(i=1;i<5;i++)　　　　／*以下为三重循环*/
　for(j=1;j<5;j++)　
　　for (k=1;k<5;k++)
　　　{
　　　　if (i!=k&&i!=j&&j!=k) 　　　/*确保i、j、k三位互不相同*/
　　　　printf("%d,%d,%d\n",i,j,k);
　　　}
}

网络上一般所说的 源代码
我都是可以在 Visual C++ 上运行吗？

怎么不行?
是程序逻辑问题?
还是编译问题?

Cpp1.obj - 71 error(s), 4 warning(s)这个程序真是惊人的错误量。。。
我都看晕了。好多循环啊。。

C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(5) : error C2065: 'printf' : undeclared identifier
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xa3'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xaf'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xd2'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xd4'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xcf'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xc2'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xce'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xaa'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xc8'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xfd'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xd6'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xd8'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xd1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xad'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xbb'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2018: unknown character '0xb7'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : warning C4138: '*/' found outside of comment
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(6) : error C2059: syntax error : '/'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : warning C4552: '<' : operator has no effect; expected operator with side-effect
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : error C2143: syntax error : missing ';' before ')'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(7) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : warning C4552: '<' : operator has no effect; expected operator with side-effect
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(8) : error C2143: syntax error : missing ';' before ')'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(9) : error C2143: syntax error : missing ';' before '{'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(10) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(11) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(12) : error C2018: unknown character '0xa1'
C:\Documents and Settings\jdytz\My Documents\My eBooks\Cpp1.cpp(13) : warning C4508: 'main' : function should return a value; 'void' return type assumed
Error executing cl.exe.

程序没有定义完全阿，不知前面怎么自定义函数的，
源代码就是程序阿，没有什么不一样，不用考虑复杂了。

#include <stdio.h>
main()
{
int i,j,k;
printf("\n");
for(i=1;i<5;i++)
　for(j=1;j<5;j++)　
　　for (k=1;k<5;k++)
　　　{
　　　　if (i!=k&&i!=j&&j!=k)
　　　　printf("%d,%d,%d\n",i,j,k);
　　　}
return 0;
}

[此贴子已经被作者于2005-5-1 23:50:15编辑过]

首先你没有包含函数需要的头文件.
其次,如果main函数定义没有提供返回值类型,按照ANSI标准,返回int.

N多错误的根源是这句注释:

／*以下为三重循环*/

书写的有问题.

应该是

/*以下为三重循环*/

老师门，你们这是太好了。。我还是头次有这么热情的回答的在编程问题上 首先！！真实太谢谢了。。