#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>

int main()
{
pid_t  pid;	
	/* fork another process */
	pid = fork();	
	if (pid < 0) { /* error occurred */
		fprintf(stderr, "Fork Failed");	
		return(1);
	}		
	else if (pid == 0) 
	{ /* child process */
		fprintf(stderr, "\n In child process \n");		
		execlp("/bin/ls", "ls", NULL);	
	}
	else { /* parent process */		
		/* parent will wait for the child to complete */		
		wait (NULL);		
		fprintf(stderr, "  Child Complete\n");		
	}
	return 0;
}