Why is it not Working

Question

Hello i have here a Code and when i run it the output is totaly wrong. cqn you help me
Code :
#include <iostream>
using namespace std;

int main()

{

int a;
int b;
int c = a - b;

cout << "Enter Your year." << endl;
cin >> a;

cout << "Enter you Birthday" << endl;
cin >> b;

cout << "You are ";
cout << c;
cout << " years old.";

return 0;
}

Answer 1

You try to do a - b at the third line, but they haven't value.

Answer 2

Yes, but you do the operation before you put value in them. If you want it work, remove a - b, and after the two cin add: c = a - b.

Answer 3

#include <iostream>
using namespace std;

int main()
{
int a;

cin>>a;

if (a>=0 && a<18)
{
cout<<"You Are Young";
}
if (a>=18 && a<30)
{
cout<<"You Are Adult";
}
if (a>=30 && a<100)
{
cout<<"You Are Old";
}
return 0;
}

Created it myself Just Give It A Try. It Works

Answer 4

but at the 6 line i have cin to value them

Answer 5

Thank you now it works and the next time i know what the problem is :D

Answer 6

You're welcome :)

Answer 7

The first [c=a-b] is to define ur return value to be an integer..........

you have to put it also at the last cin function, so that u can command the compiler to calculate that for you after receiving ur inputs......