line 46

[phongvants123]

line 46 z(); were not declare...why

#include<iostream>
using namespace std;
#include<stdio.h>
#include<conio.h>
#include<windows.h>
#include<fstream>
#include<mmsystem.h>

int choice,a,b,i;
int z(),regis(),login(),f1();
char pass[32],pass0[32];
int main()
{
    z();
}


int z()
{
    printf("1.REGISTER\n");
    printf("2.LOGIN\n");
    cin>>choice;
    switch(choice)
    {
    case 1:regis();
        break;
    case 2:login();
        break;
    default:;
    }
}


int regis()
{
    system("cls");
    printf("CREAT PASSWORD=");
    cin>>pass0;
    ofstream taolao;
    taolao.open("icreat.txt");
    taolao<<pass0;
    cout<<endl<<"DONE!";
//    taolao.close();
    //

    Z();
    taolao.close();
}

int login()
{
    system("cls");
    printf("PASSWORD=");
    while(a!=13)
    {
        f1();
        if(a<400&&a!=27&&a!='\b'&&a!='\r'&&a!='\t')
        {
            printf("%c",2);
            pass[i]=a;
            i++;
            Beep(500,60);
        }
        if(a=='\b'&&i>0)
        {
            cout<<"\b \b";
            pass[i]='\0';
            i--;
            Beep(1000,50);
        }
        else{Beep(2000,50);};
    }
    cout<<endl<<pass;
    if(pass==pass0)
    {
        cout<<"NGHE NHAC";
    }
    
}


int f1()
{
    a=getch();
        if(a==0||a==224)
        {
            a=500;
            b=getch();
        }
}

[krreisys]

Goodday!

I tried to compile your code, but i think that on line 46 you need the lowercase
z() instead of the uppercase Z().

I am a complete noob but vs gives also a error because of getch().
It says it needs to be _getch(). But i think that the int function z, regis, login
and f1 also needs to return a int value. but it never does.

I hope this helps.

[Chervil]

Yes. Either declare the function as returning an int, and do actually return an integer value, or declare the function as void.

Also, turn on as many compiler warnings as possible - they are there to help detect possible problems.
In g++ I have options

-std=c++11 -Wextra -Wall -pedantic-errors