Skip to main content

C++ Data types & Variables

C++ Data Types & Variables


Data Type tells compiler that what kind of data we are using if we need to perform Addition between two or multiple Numbers we'll use int (INTEGER), double (point value) , or other data types depending on our requirements. We use data type with variables or as a method return type.
if we need to take Name of a Student  or any Character combination of Alphabets then we'll use String or char data type.

Variables are those names which are use to store values of different data types.
value of a variable can be vari it depends on our need.

in C++ every variable of different data type take memory space of heap memory or stack memory to store values of different data types.
Example Program of Variables and data types
Example

Data Types

Variables

  1. #include <iostream> 
  2. #include <string> 
  3. using namespace std; 
  4. int main(){ 
  5.     string name = "ITECH TALEEM"; 
  6.     int rollNum = 101 ; 
  7.     cout<<"Name : "<<name<<"\n RollNumber : "<<rollNum
  8. return 0; 
  9. }
Console :
Name : ITech Taleem
RollNumber : 101

Watch Video

C++ in Urdu Hindi DataTypes & Variables Beginners Tutorial 2017

Comments

Popular posts from this blog

C++ Reserved Keywords

C++ Reserved Keyword Reserved keywords are well defined.We use them in one or more classes more than one time to get desire output from whole project. C++ Keywords are reserved words which can only be use to perform special task. Compiler already know the meaning of each keyword. Each keyword has a special meaning and it can't be changed by the programmer. Example: if , for , while , int , class keywords perform different task in different ways each keyword uses it's own syntax to perform logical operations depends on our requirement. Reserve Keywords :         #include < iostream > using namespace std ; int main (){     int rollnumber = 10;      string name = "ITech Taleem";     cout << name << endl ;     cout << rollnumber << endl ; return 0; } Console: ITechTaleem 10 Watch Video C++ in Urdu Hindi Reserved Keywords Beginners Tutorial Vi...

C++ Pass by Reference and Value Beginner Programming

Animated Gif of Pass by Reference & Value C++ pass by Reference & value There is two way of accessing values of variables and passing values in function argument, first one is pass by value and second one is pass by reference . Reference variable is another name for a existing variable. Once a reference variable is initialized the reference name may be used to refer to the variable. A reference must be initialized when it is created.You can't have NULL references. You must always be able to assume that a reference is connected to a legitimate piece of storage.Once a reference is initialized to an object, it cannot be changed to refer to another object. & operator use to declare reference variable which is use to store variable value, you can access the value of the variable by using original variable name or by using the reference variable. Syntax of Reference  variable  is very simple //variable initialization int vari = 10; //sim...

C++ Method or Function With Parameter Programming

Animated Gif of function or methods with parameter C++ function parameters A function  is a set of different statements which is use to perform a specific task. If you want to pass any user value in function arguments then it must declare variables that accept the values of the arguments . These variables are known as   parameters   of the function. compiler knows that every name with () bracket is a function . In this lecture we'll discuss built-in functions and user define functions . functions provided by C++ are called built-in functions Math() ,rand()etc. functions written by programmer In C++ program to perform a specific task depends on programmer requirements like addition between 2 or more numbers are known as User Define functions . functions use to divide and organize our program in different functions which is helpful for finding errors if any appear during programming. we declare a function using return type , function name and p...