Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
119294 糜宗易 13求1+2-3+4-5+……n的值 C++ Compile Error 0 MS 0 KB 236 2025-05-17 12:56:21

Tests(0/0):

Code:

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

Run Info:

Main.cc:1:1: error: 'include' does not name a type
 include < bits / stdc++.h >
 ^
Main.cc: In function 'int main()':
Main.cc:6:2: error: 'cin' was not declared in this scope
  cin >> n;
  ^
Main.cc:14:2: error: 'cout' was not declared in this scope
  cout << c;
  ^