#include<stdio.h> 
#include<unistd.h> 
#include<sys/wait.h> 
#include<sys/types.h> 
#include<stdlib.h>
int main()
{
int pid; 
pid=fork(); 
if(pid<0)
{
printf("\nFORK FAILED\n"); 
exit(-1);
}
else if(pid==0)
{
execlp("/bin/ls","is","-1",NULL);
}
else
{
wait(NULL);
printf("\nCHILD COMPLETE\n"); 
exit(0);
}
}