Not Simple Math

Let’s talk about a bit more complicated math. Sometimes we have a lot of calculations. In C++ (like in math) works the operator precedence, which means that groups of operators have higher priority (precedence) than other ones. For example, we do multiplication and division before addition and subtraction in expressions:


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int x = 4 + 3 * 3;
cout << x;

The program firstly calculates 3 * 3 (multiplication) and then adds 4.

The expressions in the parentheses have higher precedence than other operators and the calculations in them must be executed first.

C++ provides us with a huge number of useful functions for math tasks. Let’s take a look at the more common ones.

The functions max(x, y) and min(x, y) can be used to find the highest and lowest values of x and y respectively:


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cout << max(9, 2) << endl;
cout << min(9, 2);

¿Todo estuvo claro?

¡Gracias por tus comentarios!

Sección 2. Capítulo 6

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Contenido del Curso

Introduction to C++

1. Basics

Get Started Output New Lines Comments

2. Variables

Types of Variables Identifiers User Input Strings Simple Math Not Simple Math Increment (Prefix and Postfix)Constant Challenge

3. Conditional Statements

Booleans If Expression More Logical Operators Else Expression Else If Expression Short Forms Challenge Switch Statement The Keyword Default

4. Loops

While Loop Do/While Loop For Loop Break/Continue Statements

5. Intro to Arrays

Basic Concept of the Array Loops in Arrays Manipulations with Arrays Challenge