记一次洛谷刷题让人摸不到头脑的报错——Runtime Error.Received signal 6: Aborted / IOT trap.

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报错题目

外星密码 - 洛谷

具体报错信息

Runtime Error.Received signal 6: Aborted / IOT trap.

错误代码

#include <iostream>
#include <cstring>
using namespace std;string sol() {string s = "";string t = "";char c = ' ';int n = 0;while (cin >> c) {if (c == '[') {cin >> n;t = sol();while (n--)s += t;} else {if (c == ']')return s;elses += c;}}
}int main() {cout << sol();return 0;
}

错误原因

（还得是chat）。。自己改了半天，从cin改成scanf还是有问题。绝对没想到问题会出在这里。

更正代码

#include <iostream>
#include <cstring>
using namespace std;string sol() {string s = "";string t = "";char c = ' ';int n = 0;while (cin >> c) {if (c == '[') {cin >> n;t = sol();while (n--)s += t;} else {if (c == ']')return s;elses += c;}}return s;
}int main() {cout << sol();return 0;
}