学习笔记 

#include<stdio.h>
#include<stdlib.h>
#include<string.h>#define MaxSize 10
typedef struct{char data[MaxSize];int top;
}SqStack;//初始化栈
void InitStack(SqStack &S){S.top = 0;
} //判断栈是否为空
bool StackEmpty(SqStack S){if (S.top == 0) return true;return false;
} //新元素入栈
bool Push(SqStack &S,char x){if (S.top > MaxSize) return false;S.data[S.top] = x;printf("此时入栈的为: %c\n",x); S.top++;return true;
} //栈顶元素出栈
bool Pop(SqStack &S,char &x) {if (S.top == 0) return false;x = S.data[S.top-1];printf("此时出栈的为: %c\n",x); S.top--;return true;
}bool bracketCheck(char str[],int length){SqStack S;InitStack(S);for(int i=0;i<length;i++){if(str[i] == '(' || str[i] == '[' || str[i] == '{'){Push(S,str[i]);}else{if(StackEmpty(S)) return false;char topelem;Pop(S,topelem);if(str[i] == ')' && topelem != '(') {printf("匹配失败！\n");return false;}if(str[i] == ']' && topelem != '[') {printf("匹配失败！\n");return false;}if(str[i] == '}' && topelem != '{') {printf("匹配失败！\n");return false;}printf("这一对括号为：%c %c\n",topelem,str[i]);}}return StackEmpty;
}int main(){char str[] = "{[([])]}";int length = strlen(str);bracketCheck(str,length);return 0;
}