Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
84098 石晋骁 素数对 C++ Compile Error 0 MS 0 KB 439 2024-07-15 11:31:20

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; bool is(int a){ if(b - a == 2){ for(int j = 2;j < a;j++){ if(a%j == 0){ return false; } } for (int k = 2;k < b;k++){ if(b%k == 0){ return false; } } return true; }else{ return false; } } int main(){ int n; cin >> n; for(int i = 3;i < n;i = i + 2){ if(is(i) && is(i+2){ cout << i << " " << i+2 << endl; } } return 0; }

Run Info:

Main.cc: In function 'bool is(int)':
Main.cc:4:5: error: 'b' was not declared in this scope
  if(b - a == 2){
     ^
Main.cc: In function 'int main()':
Main.cc:24:22: error: expected ')' before '{' token
   if(is(i) && is(i+2){
                      ^
Main.cc:27:2: error: expected primary-expression before '}' token
  }
  ^
Main.cc: In function 'bool is(int)':
Main.cc:19:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^