Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
138601 谭思宸 质数的和与积 C++ Compile Error 0 MS 0 KB 613 2025-11-29 10:39:26

Tests(0/0):

Code:

#include<iostream> #include<cmath> using namespace std; bool sushu(int n){ int j; if(n<=1) return False; for(j=2;j<=sqrt(n);j++){ if(n%j==0){ return False; } } return True; } int main(){ int i=0,j,num=0,n1=2,n2,max=0; int arr[20001]={0}; cin>>num; while(n1<=num/2){ n2=num-n1; if(sushu(n2)&&sushu(n1)){ if(max=n1*n2) max=n1*n2; } n1++; } cout<<max<<endl; return 0; }

Run Info:

Main.cc: In function 'bool sushu(int)':
Main.cc:7:27: error: 'False' was not declared in this scope
                    return False;
                           ^
Main.cc:10:20: error: 'False' was not declared in this scope
             return False;
                    ^
Main.cc:13:12: error: 'True' was not declared in this scope
     return True;
            ^
Main.cc: In function 'int main()':
Main.cc:22:29: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
                 if(max=n1*n2)
                             ^
Main.cc:16:13: warning: unused variable 'i' [-Wunused-variable]
         int i=0,j,num=0,n1=2,n2,max=0;
             ^
Main.cc:16:17: warning: unused variable 'j' [-Wunused-variable]
         int i=0,j,num=0,n1=2,n2,max=0;
                 ^
Main.cc:17:13: warning: unused variable 'arr' [-Wunused-variable]
         int arr[20001]={0};
             ^