C++ Data Types

1. Introduction

This section provides a foundational overview of arithmetic operations and their pitfalls, data types, and the importance of specifying types.

Overview

Arithmetic Operations

Division int and double

Math in C++

Specifying a Type

2. Numerical Data Types

short, int, long, float, double, etc. are all numerical data types in C++. In this section, you will learn about all of them as well as the pitfalls they may conceal.

Numerical Data Types Summary

3. Text Data Type

This section will guide you on char and string data types to work with text in C++. You will learn many handy string methods to make using strings easier.

Changing The String Practice

Finding Text in a String

Strings in Memory

4. Other Data Types and Concepts

This section focuses on the bool data type, the use of void and auto, and covers type conversion, which is frequently used in C++.

Implicit Type Conversion

Explicit Type Conversion

Math in C++

In addition to the +, -, *, /, and % operations, we can perform many more mathematical operations using functions from the <cmath> library. Here is a table of the most used ones:

Function	Description	Additional info
`cos(x)`	Returns the cosinus of `x`	`x` is specified in radians
`sin(x)`	Returns the sinus of `x`	`x` is specified in radians
`tan(x)`	Returns the tangens of `x`	`x` is specified in radians
`exp(x)`	Returns the exponent of `x`	returns eˣ
`log(x)`	Returns the natural logarithm of `x`
`pow(x, a)`	Returns `x` to the power of `a`
`sqrt(x)`	Returns the square root of `x`
`cbrt(x)`	Returns the cubic root of `x`
`ceil(x)`	Rounds `x` up	Example: `ceil(5.2)` is 6
`floor(x)`	Rounds `x` down	Example: `floor(5.2)` is 5
`round(x)`	Rounds `x` to nearest	Example: `round(5.2)` is 5

Don't forget to include the library using the following line:

Here is an example of using each of the functions mentioned above:

main.cpp

Note
Constants M_PI and M_E for value of π (3.1415...) and e (2.7183...) are also defined in the <cmath> library.

Tudo estava claro?

Seção 1. Capítulo 4

Conteúdo do Curso

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

C++ Data Types

Math in C++

In addition to the +, -, *, /, and % operations, we can perform many more mathematical operations using functions from the <cmath> library. Here is a table of the most used ones:

Function	Description	Additional info
`cos(x)`	Returns the cosinus of `x`	`x` is specified in radians
`sin(x)`	Returns the sinus of `x`	`x` is specified in radians
`tan(x)`	Returns the tangens of `x`	`x` is specified in radians
`exp(x)`	Returns the exponent of `x`	returns eˣ
`log(x)`	Returns the natural logarithm of `x`
`pow(x, a)`	Returns `x` to the power of `a`
`sqrt(x)`	Returns the square root of `x`
`cbrt(x)`	Returns the cubic root of `x`
`ceil(x)`	Rounds `x` up	Example: `ceil(5.2)` is 6
`floor(x)`	Rounds `x` down	Example: `floor(5.2)` is 5
`round(x)`	Rounds `x` to nearest	Example: `round(5.2)` is 5

Don't forget to include the library using the following line:

Here is an example of using each of the functions mentioned above:

main.cpp

Note
Constants M_PI and M_E for value of π (3.1415...) and e (2.7183...) are also defined in the <cmath> library.

Tudo estava claro?

Seção 1. Capítulo 4