How do I fix this math formula in C language?

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C++

#include <stdio.h>
int main()
    {int first, second, add, subtract, multiply;
    float divide;
    printf("Enter two integers\n");
    scanf("%d%d", &first, &second);
    add = first + second;
    subtract = first - second;
    multiply = first * second;
    divide = first / (float) second;
    printf("Sum = %d\n", add);
    printf("Difference = %d\n", subtract);
    printf("Multiplication = %d\n", multiply);
    printf("Division = %.2f\n", divide);
    return 0;}

What I have tried:

Tried to input number but only shown 0s

Posted 28-Jul-22 15:35pm

Danna Harvey

Updated 28-Jul-22 16:36pm

Patrice T

v3

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merano99 29-Jul-22 8:41am

Checked the Code with VS. Each calculation has the expected result. Which development environment (compiler, operating system incl. version) produce the result?

2 solutions

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Patrice T · Answer 1 · 2022-07-28T16:02:00

Quote:
Tried to input number but only shown 0s

What to say ?
This is the result of your code with an online C++ compiler:

Enter two integers
2 3
Sum = 5
Difference = -1
Multiplication = 6
Division = 0.67

Your code do not behave the way you expect, or you don't understand why !

There is an almost universal solution: Run your code on debugger step by step, inspect variables.
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't know what your code is supposed to do, it don't find bugs, it just help you to by showing you what is going on. When the code don't do what is expected, you are close to a bug.
To see what your code is doing: Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.

Debugger - Wikipedia, the free encyclopedia[^]

Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
Basic Debugging with Visual Studio 2010 - YouTube[^]

1.11 — Debugging your program (stepping and breakpoints) | Learn C++[^]

The debugger is here to only show you what your code is doing and your task is to compare with what it should do.

Rick York · Answer 2 · 2022-07-28T16:36:00

Solution 2

Just guessing but I think the scanf needs to have a space in the format string : "%d %d".

I think it would be better to prompt for one value at a time.

Posted 28-Jul-22 16:36pm

Rick York