清蒸萌新literal @[email protected]

#include <stdio.h>
#include <ctype.h>
#include <stack>
#include <stdlib.h>

int error()
{
    printf("match failed\n");
    return EXIT_FAILURE;
}

int main()
{
    std::stack<int> st;
    int ch;
    while((ch = getchar()) != EOF)
    {
        switch(ch)
        {
        case '{': st.push('}'); break; 
        case '[': st.push(']'); break;
        case '(': st.push(')'); break;
        case '}':
        case ']':
        case ')':
            if(st.empty() || ch != st.top())
                return error();
            st.pop();
            break;
        case '\r':
        case '\n':
        case '\x1a':
            break;
        default:
            return error();
        }
    }

    if(!st.empty()) return error();

    printf("success\n");
    return EXIT_SUCCESS;
}