#include <stdio.h>
#define PERIOD '.'

int main (void)
{
    int ch;
    int charcount = 0;

    while ((ch = getchar ()) != PERIOD)
    {
        if (ch != '"' && ch != ''')
          charcount++;
    }

    printf ("There are %d non-qoute charachters. \n", charcount);

    return 0;
}                                                                                                                                       

[ 本帖最后由 ilsoviet1917 于 2011-6-9 10:27 编辑 ]

错误提示：

chcount.c: 在函数‘mian’中:
chcount.c:11:26: 错误：空的字符常量
chcount.c:11:28: 警告：缺少结尾的 ' 字符
chcount.c:11:3: 错误：缺少结尾的 ' 字符
chcount.c:12:5: 错误：expected ‘)’ before ‘charcount’
chcount.c:13:2: 错误：expected expression before ‘}’ token

刚才main大错了=。=

不过错误提示还是一样的
chcount.c: 在函数‘main’中:
chcount.c:11:26: 错误：空的字符常量
chcount.c:11:28: 警告：缺少结尾的 ' 字符
chcount.c:11:3: 错误：缺少结尾的 ' 字符
chcount.c:12:5: 错误：expected ‘)’ before ‘charcount’
chcount.c:13:2: 错误：expected expression before ‘}’ token

谢谢楼上！