CODEWITHSUNDEEP
c++
jay
jay

Reputation: 7

Addition and Subtraction giving incorrect results

I made a simple program to add and subtract the given numbers. Let's say the 2 numbers give were 5 and 5. It would print 5 + 5 = 10 and 5 - 5 = 0. Right now I'm not sure what's wrong. I might need a temporary variable, but something with the input isn't right. If you test the numbers with 5 and 5 it prints: 

Addition / Subtraction Program
*------------------------------*

Press Enter to begin!
What is the number you'd like to add / sub to?5
5
What is the next number?5
55 + 5 = 105 - 5 = 0

Here's the code I'm using: 

#include <iostream>

using namespace std;

int main() {

    int num_1;
    int num_2;

    cout << "Addition / Subtraction Program" << endl << "*------------------------------*\n\nPress Enter to begin!";
    cin.get();

    cout << "What is the number you'd like to add / sub to?";

    cin >> num_1;

    cout << num_1 << endl << "What is the next number?";

    cin >> num_2;

    cout << num_2;

    cout << num_1 << " + " << num_2 << " = " << num_1 + num_2;

    cout << num_1 << " - " << num_2 << " = " << num_1 - num_2;
    return 0;
}

Upvotes: 0

Views: 2067

Answers (3)

Razib
Razib

Reputation: 11173

Actually there is no problem with addition and subtraction. You didn't print the new line ('\n') character at the end of this line - 

cout << num_1 << " + " << num_2 << " = " << num_1 + num_2;

It's good practice to add newline ('\n') character one endl manipulator at the end of each line.

In your current code, you have only formatting problem.

Upvotes: 0

Ayushi Jha
Ayushi Jha

Reputation: 4023

The outputs are not incorrect. You only need to fix the formatting. In between the following two cout's, there is no clear demarcation:

cout << num_1 << " + " << num_2 << " = " << num_1 + num_2;//cout 1

cout << num_1 << " - " << num_2 << " = " << num_1 - num_2;//cout 2

Hence you get the output as:

 55 + 5 = 105 - 5 = 0
 |-cout 1 -||-cout 2-|

You can either use a newline (by cout<<endl; or cout<<"\n"; between the two) or a space(cout<<" ";) to clearly demarcate between the two outputs.

Upvotes: 0

Carcigenicate
Carcigenicate

Reputation: 45826

The output is correct, it's just missing spaces.

After the user enters their number, you echo it back to them; without any whitespace. This "turns" 5 into 55, and 10 5 into 105.

The addition and subtraction are fine, you just need to format your output. End your cout lines with a << endl; or << "\n"; to see the difference.

Upvotes: 6

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