Course Content

C++ Data Types

1. Introduction

Overview Arithmetic Operations Division int and double Math in C++Specifying a Type

2. Numerical Data Types

Integers Using Integers Type modifier Float Double Numerical Data Types Summary

3. Text Data Type

Char String Indexing a String Working With String Changing The String Practice Finding Text in a String Strings in Memory

4. Other Data Types and Concepts

Boolean Boolean Expressions Void Auto Unsigned Implicit Type Conversion Explicit Type Conversion

Arithmetic Operations

Let's start with a very basics. But don't skip this section because even here you might find something usefull that then will save you hours of researching.

Setting the precision

As you already should know you can perform basic data manipulation using arithmetic operators such as addition (+), subtraction (-), division (/), and multiplication (*). Additionally, the modulus operator (%) calculates the remainder of a division.

main


              123456789
            
#include <iostream>
#include <iomanip>

int main()
{
    // Uncomment to see the difference
    // std::cout << std::fixed;
    std::cout << std::setprecision(5) << 15.125 * 0.8309 << std::endl;
}

In the example above, floating-point results are sometimes obtained during calculations. You can manage the precision of these results using std::setprecision and std::fixed to control how setprecision functions.

Note
Without std::fixed, std::setprecision controls the total number of digits displayed, including both before and after the decimal points. With std::fixed, the number is displayed in fixed-point notation, keeping the decimal point in a fixed position.

Task

Include <iomanip> to be able to set precision.
Follow the comments to set a precision.
Calculate and output the equivalent of 5 miles in kilometers rounding to one decimal place.

Note
To convert 5 miles to kilometers, you would multiply the number of miles by the conversion factor (1.60934).

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 2

Arithmetic Operations

Let's start with a very basics. But don't skip this section because even here you might find something usefull that then will save you hours of researching.

Setting the precision

main


              123456789
            
#include <iostream>
#include <iomanip>

int main()
{
    // Uncomment to see the difference
    // std::cout << std::fixed;
    std::cout << std::setprecision(5) << 15.125 * 0.8309 << std::endl;
}

Note
Without std::fixed, std::setprecision controls the total number of digits displayed, including both before and after the decimal points. With std::fixed, the number is displayed in fixed-point notation, keeping the decimal point in a fixed position.

Task

Include <iomanip> to be able to set precision.
Follow the comments to set a precision.
Calculate and output the equivalent of 5 miles in kilometers rounding to one decimal place.

Note
To convert 5 miles to kilometers, you would multiply the number of miles by the conversion factor (1.60934).

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 2

Arithmetic Operations

Let's start with a very basics. But don't skip this section because even here you might find something usefull that then will save you hours of researching.

Setting the precision

main


              123456789
            
#include <iostream>
#include <iomanip>

int main()
{
    // Uncomment to see the difference
    // std::cout << std::fixed;
    std::cout << std::setprecision(5) << 15.125 * 0.8309 << std::endl;
}

Note
Without std::fixed, std::setprecision controls the total number of digits displayed, including both before and after the decimal points. With std::fixed, the number is displayed in fixed-point notation, keeping the decimal point in a fixed position.

Task

Include <iomanip> to be able to set precision.
Follow the comments to set a precision.
Calculate and output the equivalent of 5 miles in kilometers rounding to one decimal place.

Note
To convert 5 miles to kilometers, you would multiply the number of miles by the conversion factor (1.60934).

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Let's start with a very basics. But don't skip this section because even here you might find something usefull that then will save you hours of researching.

Setting the precision

main


              123456789
            
#include <iostream>
#include <iomanip>

int main()
{
    // Uncomment to see the difference
    // std::cout << std::fixed;
    std::cout << std::setprecision(5) << 15.125 * 0.8309 << std::endl;
}

Note
Without std::fixed, std::setprecision controls the total number of digits displayed, including both before and after the decimal points. With std::fixed, the number is displayed in fixed-point notation, keeping the decimal point in a fixed position.

Task

Include <iomanip> to be able to set precision.
Follow the comments to set a precision.
Calculate and output the equivalent of 5 miles in kilometers rounding to one decimal place.

Note
To convert 5 miles to kilometers, you would multiply the number of miles by the conversion factor (1.60934).

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 1. Chapter 2

Switch to desktop for real-world practiceContinue from where you are using one of the options below