Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
76607 石晋骁 13求1+2-3+4-5+……n的值 C++ Compile Error 0 MS 0 KB 269 2024-06-02 15:31:39

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int n; int sum = 0; sun += 1; cin >> n; for (int i = 2;i <= n;i++){ if(i%2 == 0){ sum = sum+i; }else{ sun = sun-i; } } cout << sun + sum; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:8:5: error: 'sun' was not declared in this scope
     sun += 1;
     ^