数据结构（C语言） 栈的应用之括号匹配

#include<stdio.h>
#include<stdlib.h>
typedef struct SqStack {
    char str[100];
    int top;
}SqStack;
void Push(SqStack* S, char c) {
    S->top++;
    S->str[S->top] = c;
}
void Pop(SqStack* S, char* c) {
    *c = S->str[S->top];
    S->top--;
}
int Empty(SqStack* S) {
    return S->top == -1;
}
void Init(SqStack* S) {
    S->top = -1;
}
char LeftBracket(char right) {
    if (right == ‘)‘)
        return ‘(‘;
    else if (right == ‘]‘)
        return ‘[‘;
    else if (right == ‘}‘)
        return ‘{‘;
    return 0;
}
int BracketsCheck(char* str) {
    SqStack S;
    Init(&S);
    int i = 0;
    while (str[i] != ‘\0‘) {
        switch (str[i]) {
        case ‘(‘:
        case ‘[‘:
        case ‘{‘:
            Push(&S, str[i]);
            i++;
            break;
        case ‘)‘:
        case ‘]‘:
        case ‘}‘:
            if (!Empty(&S)) {
                char c;
                Pop(&S, &c);
                if (c == LeftBracket(str[i]))
                    i++;
                else
                    return 0;
            }
            else
                return 0;
            break;
        default:
            i++;
        }
    }
    return Empty(&S);
}

void main() {
    char* str = "{[1+2*(5-2)]*4*{2+6}}";
    int pass = BracketsCheck(str);
    if (pass) {
        printf("括号匹配！\n");
    }
    else {
        printf("括号不匹配！\n");
    }
    getchar();
}