Static Keyword in C++

When static keyword is used, variable or data members or functions can not be modified again. It is allocated for the lifetime of program. Static functions can be called directly by using class name.

Static variables are initialized only once. Compiler persist the variable till the end of the program. Static variable can be defined inside or outside the function. They are local to the block. The default value of static variable is zero. The static variables are alive till the execution of the program.

Here is the syntax of static keyword in C++ language,

Here,

datatype − The datatype of variable like int, char, float etc.

variable_name − This is the name of variable given by user.

value − Any value to initialize the variable. By default, it is zero.

return_type − The datatype of function to return the value.

function_name − Any name to the function.

Here is an example of static variable in C++ language,

Live Demo