键盘输入字符验证其中大括号是否匹配

#include <stdio.h>//验证大括号是否匹配int main(){int ch;int count=0;while( ( ch=getchar() )!= EOF ){if( ch=='{' )            {                count++;            }        if(ch=='}' && count==0)        {            printf("括号不匹配");            return 0;        }        if(ch=='}' && count!=0)        {            count--;        }}if(count==0)    {        printf("括号匹配");    }    else        {            printf("括号不匹配");        }return 0;}