#include <stdio.h>
int main()
{
char ch;
int count = 0;//定义一个计数器count
while((ch = getchar()) != EOF)//循环输入,EOF结束
{
if(ch == '{')
{
count ++;
} //当遇到{时,计数器+1
if(ch == '}' && count == 0)
{
printf("不匹配\n");
return 0;
} //当遇到}但计数器为0了,输出不匹配,即为}在{前边
if(ch == '}' && count !=0)
{
count --;
} //当遇到}且计数器不为0时,计数器-1
}
if(count == 0)
{
printf("匹配!\n");
}
else
{
printf("不匹配!\n");
}//判断计数器count
system("pause");
return 0
}
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