Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
115219 唐俊逸 12序列的第n项 C++ Compile Error 0 MS 0 KB 413 2025-03-29 18:49:53

Tests(0/0):

Code:

#include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n,a=1,j=1; cin>>n for(int i=3;i<=n;i++){ a=a+j; j++; } cout<<a; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:8:5: error: 'cin' was not declared in this scope
     cin>>n
     ^
Main.cc:9:17: error: 'i' was not declared in this scope
     for(int i=3;i<=n;i++){
                 ^
Main.cc:14:5: error: 'cout' was not declared in this scope
     cout<