#include<string>
#include<stdio.h>
#include<stdlib.h>

using namespace std;

float pay,price,dis,change,sale;
char username[30];
char password[30];


int main(){
    string ch_username="Cashier01",ch_password="adminadmin";
    printf("\t\t---stree shop---\n\n");
    printf("please login...");
    printf("\nusername:");
    scanf("%s",&username);
    printf("password:");
    scanf("%s",&password);


    if(username==ch_username&&password==ch_password){
           printf("\nHi Cashier01");
           printf("\nplease insert price:");
           scanf("%f",&price);

           printf("please insert pay:");
           scanf("%f",&pay);

           if(price>=1000){
              dis=(price/100)*5;
              sale=pay-dis;
              change=pay-sale;
              printf("customer got 5%% discount as %0.2f",dis);printf("Bath");
              printf("\nprice after discount is %0.02f",sale);printf("Bath");
              printf("\nplease change %0.02f",change);printf("Bath");
             }
           else{
              change=pay-price;
           }
    }
    printf("\n Wrong username or password\n");
    system("pause");
}