13-2.c

本书是单片机系列教材

/*13-2.c*/
#include<stdio.h>
#include<stdio.h>
main()
{
char *password="tcass";/*　密码　*/
char *p;
int time=0;
do
{
   printf("Enter password:");
  gets(p);
  if(strcmp(p,password)==0)
	{ printf("OK!welcome\n");
	exit(0);
	}
else
  time++;
printf("\n");
}while(time<3);
if(time==3)
printf("You are irregal user\n");
}