#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include <string.h>
int main()
{
int dem=0;
char mk[50];//do dai ten mat khau
puts("MOI BAN NHAP MAT KHAU!:");
gets(mk);
while(strcmp(mk,"uyen nuong")!=0 && dem<2)//strcmp la ham so sanh chuoi
{ printf("MAT KHAU SAI NHAP LAI MAT KHAU!:");
dem++;//cho vong lap chay 3
gets(mk);//ham nhap chuoi
}
if(strcmp(mk,"uyen nuong")!=0 && dem==2)
printf("BAN HET LUOT DANG NHAP !");
else
printf("\nBAN DANG NHAP THANH CONG !");
getch ();
return 0;
}
co phai code ban can k