Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Learn Division int and double | Introduction
C++ Data Types

bookDivision int and double

We will not stop on most operations since they work as expected. Instead, let's look at the reasons behind the incorrect result obtained from the division operation. Those are explained in a video below:

It's not just a problem limited to division. When you use operators such as +, -, *, or / on variables of certain types, the resulting value will have the same type as the operands.

It's important to be mindful of these possibilities and take them into account.

Task

Swipe to start coding

  1. Calculate and output how many meters in a given number of kilometers (2455).
  2. Make sure the output number is float and not integer.

Note

In order to get the correct result, we only need to add . to any of the numbers in division (9/4. or 9./4 or 9./4.).

Solution

solution.cpp

solution.cpp

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 1. ChapterΒ 3
single

single

Ask AI

expand

Ask AI

ChatGPT

Ask anything or try one of the suggested questions to begin our chat

Suggested prompts:

Can you explain how to fix the division issue in C++?

Why does C++ remove the decimal part during integer division?

Are there other common type-related mistakes in C++ I should watch out for?

close

Awesome!

Completion rate improved to 4.35

bookDivision int and double

Swipe to show menu

We will not stop on most operations since they work as expected. Instead, let's look at the reasons behind the incorrect result obtained from the division operation. Those are explained in a video below:

It's not just a problem limited to division. When you use operators such as +, -, *, or / on variables of certain types, the resulting value will have the same type as the operands.

It's important to be mindful of these possibilities and take them into account.

Task

Swipe to start coding

  1. Calculate and output how many meters in a given number of kilometers (2455).
  2. Make sure the output number is float and not integer.

Note

In order to get the correct result, we only need to add . to any of the numbers in division (9/4. or 9./4 or 9./4.).

Solution

solution.cpp

solution.cpp

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

close

Awesome!

Completion rate improved to 4.35
SectionΒ 1. ChapterΒ 3
single

single

some-alt