Initializing And Declaration Of Variables in C and C++

Initializing And Declaration Of Variables in C and C++

Initializing And Declaration Of Variables in C and C++

Declaration
In C++ (as in many other programming languages) all the variables that a program is going to use must be declared prior to use.

for example     int i , j.   float f, double etc..

Initialization

Process of   giving value to a function is known as initializing a variable.

for example  int i = 50;

Basic Program

#include<iostream.h>

int main()

{

  int i;                //declaration of variable

  i = 0;                // initializing a variable

 cout<<"Value of i is   "<<i<<endl;

}

output:

value of i is 0