The integer variables are used to store integer numbers in your program. It corresponds to all negative and positive numbers without comma.
This is an example:
With theses integers, you can do mathematical operations such as addition, subtraction or more.
Here are some examples:
This is a table of all the mathematical operations that can be possible on the integers:
| Operator | Program |
|---|---|
| Addition: + | int addition =5 + 5 // Return 10 in addition’s variable |
| Subtraction: – | int soustraction =5 – 5 // Return 0 in subtraction’s variable |
| Multiplication: * | int multiplication = 7*2; // Return 14 in multiplication’s variable |
| Divison: / | int division = 6/2; // Return 3 in the division’s variable |
| Modulo: % | int modulo =7 % 5 // Return 2 in the modulo’s variable |
The maximum of two integer numbers will return the number which are the most important. We will see an example just below:
You can also compare two integer variables in a if, for or while loop, with comparison operators. You can find theses operators our course about mathematics function.
It is possible that a you need to transform a number from a float’s variable, string to an integer’s variable. To do that you will need to add (int) before your variable to transform it to integer’s variable:
You can also directly use a float’s variable or a string’s variable and convert it to an integer:
By converting a the value of a string’s variable into an integer, it will take the value in the ASCII table of your characters: