Explain scope rules of functions and variables in a C++ program

1.	Explain scope rules of functions and variables in a C++ program
Answer» 1. Local variable or function: A variable or function declared inside a function is called local variable or function. This cannot be accessed by the outside of the function. Eg. main() { int k;//local variable , cout<<sum(a,b); // local function } 2. Global variable or function: A variable or function declared out side of a function is called global variable or function. This can be accessed by any statements. Eg int k; // global variable int sum(inta, int b); //global function main() { }

Answer»

1. Local variable or function:

A variable or function declared inside a function is called local variable or function. This cannot be accessed by the outside of the function.

Eg.

main()

{

int k;//local variable ,

cout<<sum(a,b); // local function

}

2. Global variable or function:

A variable or function declared out side of a function is called global variable or function. This can be accessed by any statements.

int k; // global variable

int sum(inta, int b); //global function

main()

{

}

Discussion