C++ basic coding issue

Question

#include <iostream>
using namespace std;
int main() {
    int a=0,b=0;
    cin>>a>>b>>endl;
    for(int i=a;i<=b;++i)
    cout<<i<<endl;
    return 0;
}

I want to see the output is about the integers inclusive between a and b, but after entering two numbers, it shows no output..

This code doesn't compile - you don't need (and can't use) `endl` with `cin`. — Mureinik, Oct 07 '17 at 11:55
[`using namespace std;` is a bad practice](https://stackoverflow.com/q/1452721/2176813), never use it. — tambre, Oct 07 '17 at 12:25
You should learn to use a debugger - in a long run you will have to use it anyway to answer questions like the one you posted — YePhIcK, Oct 07 '17 at 12:25

HowITsDone · Answer 1 · 2017-10-11T17:29:57.463

0

#include <iostream>
using namespace std;
int main() {
    int a = 0, b = 0;
    cin >> a;
    cin >> b;
    for (int i = a; i <= b; i++)
        cout << i << endl;
    return 0;
}

EDIT: I removed something as it wasn't true :P Silly me.

Also 'endl' doesn't work with cin :)

edited Oct 11 '17 at 17:29

answered Oct 07 '17 at 12:19

HowITsDone

60
8

1

He can get all in one line. – ssovukluk Oct 07 '17 at 13:33

score 0 · Answer 2 · answered Oct 07 '17 at 12:55

    #include <iostream>
using namespace std;
int main() {
    int a=0,b=0;
    cin>>a>>b>>endl;
    for(int i=a;i<=b;++i)
    cout<<i<<endl;
    return 0;
}

First you can't use endl in cin Second you wrote ++i inside your for loop which will increase value of by i means value of will become 1 from 0. Therefore the condition will never be true as value of b is 0.

THE CORRECT WAY

    #include <iostream>
using namespace std;
int main() {
    int a=0,b=0;
    cin>>a>>b;
    for(int i=a;i<=b;i++)
    cout<<i<<endl;
    return 0;
}

@ifconfig what are you using? Turbo C? – Ganofins Dec 05 '18 at 18:03 — Ganofins, Dec 05 '18 at 18:03

score -1 · Answer 3 · answered May 11 '20 at 14:00

-1

The code is wrong because you have already got a and b equal to 0,and after that you are taking a and b as inputs. If you wanna take them as inputs you should write int a,b. NOT int a=0,b=0

answered May 11 '20 at 14:00

yoron

1
4

This is incorrect. Initializing `a` and `b` doesn't prevent them from being used as inputs. – Blastfurnace May 13 '20 at 14:42

C++ basic coding issue

3 Answers3