无限循环问题 [英] infinite loop problem

问题描述

我在ubuntu 10.04中编译了以下程序，但进入了无限循环.
请帮助我找到问题.
并告诉你什么是EOF..

i compiled the following program in ubuntu 10.04, but it went into an infinite loop.
please help me find the problem.
and also tell what EOF is..

#include<stdio.h>
void main()
{
	int nwords[20];
	int count=0, i, c;
	for(i=0;i<20;i++)
	{
		nwords[i]=0;
	}
	while((c=getchar())!='\n')
	{
		while((c!=' ')||(c!='\t'))
		{
			nwords[count]++;
			c=getchar();
		}
		count++;
	}
	for(i=0;i<20;i++)
	{
		printf("word no. %d : %d letters", (i+1), nwords[i]);
	}
}

推荐答案

您的无限循环是因为内部循环仅在c=='' ''和c==''\t''时才结束.永远不会发生...

Your infinite loop is because the inner loop is ended only when c=='' '' and c==''\t''. It will never happen...

对 while 子句中的变量 count 施加条件:

计数< 20

put a condition on the variable count in the while clause :

count < 20

while(c!=' ' && c!='\t')

不能同时等于这两个字符都是有效字符.

It must be not equal to both of these to be a valid character.

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