#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<unistd.h>
#include "apue.h"

int main(void){

char buf[MAXLINE];
pid_t pid;
int status;
printf("%% ");

while(fgets(buf,MAXLINE,stdin) != NULL){

if(buf[strlen(buf)-1] == 'n')
 buf[strlen(buf)-1] = 0 ;

if((pid = fork()) < 0 ){
   printf("fork error");
}else if(pid == 0){
  execlp(buf , buf, (char * ) 0);
  printf("coulden't exceute : %s",buf);
  exit(127);

  }
   if((pid = waitpid(pid,&status,0)) < 0)
   printf("waitpid error");
   printf("%% ");

  }
    exit(0);
  }