Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
119292 黄梓皓 13求1+2-3+4-5+……n的值 C++ Compile Error 0 MS 0 KB 179 2025-05-17 12:49:30

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:1:25: warning: extra tokens at end of #include directive
 #include using namespace std; int main(){ 
                         ^
Main.cc:2:17: error: 'cin' does not name a type
 int n; int c=1; cin>>n;
                 ^
Main.cc:3:2: error: expected unqualified-id before 'for'
  for(int i=2;i<=n;i++){ 
  ^
Main.cc:3:14: error: 'i' does not name a type
  for(int i=2;i<=n;i++){ 
              ^
Main.cc:3:19: error: 'i' does not name a type
  for(int i=2;i<=n;i++){ 
                   ^
Main.cc:6:2: error: 'cout' does not name a type
  cout<