Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
149095 张锦程 12序列的第n项 C++ Compile Error 0 MS 0 KB 169 2026-03-07 14:27:26

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for(int i=0;i<=n-2;i++) a+=i; cout<<a<<endl; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:7:9: error: 'a' was not declared in this scope
         a+=i;
         ^
Main.cc:8:11: error: 'a' was not declared in this scope
     cout<