Increase and decrease (++, --)
Shortening even more some expressions, the increase operator (++) and the decrease operator (--) increase or reduce by one the value stored in a variable.
Increase and decrease (++, --)
Shortening even more some expressions, the increase operator (++) and the decrease operator (--) increase or reduce by one the value stored in a variable.
Compound assignment (+=, -=, *=, /=, %=, >>=, <<=, &=, ^=, |=)
When we want to modify the value of a variable by performing an operation on the value currently stored in that variable we can use co
Arithmetic operators ( +, -, *, /, % )
The five arithmetical operations supported by the C++ language are:
+ addition
- subtraction
* multiplication
/ division
% modulo
Operators
Once we know of the existence of variables and constants, we can begin to operate with them. For that purpose, C++ integrates operators.
You can define your own names for constants that you use very often without having to resort to memory-consuming variables, simply by using the #define preprocessor directive. Its format is:
Literals
Literals are the most obvious kind of constants. They are used to express particular values within the source code of a program.
As you may see in the previous example, strings can be initialized with any valid string literal just like numerical type variables can be initialized to any valid numerical literal.
Variables that can store non-numerical values that are longer than one single character are known as strings.
The C++ language library provides support for strings through the standard string class
When declaring a regular local variable, its value is by default undetermined. But you may want a variable to store a concrete value at the same moment that it is declared.
In order to use a variable in C++, we must first declare it specifying which data type we want it to be.
facebook
twitter
linkedin
blog