Constant
In the previous chapters, we printed some expressions. However, what to do if we need to store these expressions for future usage? In C++ (like in other programming languages) there are containers to keep data - variables. For each type of data (numbers, strings, characters) there is a type of variable.
Let’s take a look at the most often used types:
const double x = 42;
The variable x will always be 42 and nobody can change it. The following code would cause an error:
const int x = 10;
x = 15;
You should declare variables as constants if you are sure that they will probably never change:
const int monthPerYear = 12;
const char firstAlphabetLetter = 'A';
Tack för dina kommentarer!
Fråga AI
Fråga AI
Fråga vad du vill eller prova någon av de föreslagna frågorna för att starta vårt samtal
Awesome!
Completion rate improved to 3.33Constant
Svep för att visa menyn
In the previous chapters, we printed some expressions. However, what to do if we need to store these expressions for future usage? In C++ (like in other programming languages) there are containers to keep data - variables. For each type of data (numbers, strings, characters) there is a type of variable.
Let’s take a look at the most often used types:
const double x = 42;
The variable x will always be 42 and nobody can change it. The following code would cause an error:
const int x = 10;
x = 15;
You should declare variables as constants if you are sure that they will probably never change:
const int monthPerYear = 12;
const char firstAlphabetLetter = 'A';
Tack för dina kommentarer!
