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TEA BREAK WITH C++: VARIABLES

Since we learned basic input function at programming with C++, we need to talk a little more about the variables. 

Variables are simply naming some data location in your pc. With variables you can store a value. 

Variables can be global, local or block based. Actually, you can use the same variable name in these locations at the same time. 

  1. #include <iostream>
  2. using namespace std;
  3. int sameVar=1; //defining a global variable at header location
  4. int main(){
  5.     int sameVar=2;    //defining a local variable inside int main
  6.     cout<<“local variable:”<<sameVar; //printing a local variable in int main 
  7.     {
  8.     int sameVar=3; //here we define a variable in any block. 
  9.     cout<<“block variable:”<<sameVar; //printing the block variable
  10. }
  11. //reaching a global variable inside program
  12. cout<<“global variable:”<<::sameVar; //we print global variable in a program
  13. }

 Output;

Here the most important thing we need to talk is the 

variable = value logic. 

Always variable is on the left and the value is on the right of the equivalent sign. 

TEA BREAK WITH C++: Basic Input & endl

On line 9 in the previous example we give 

    int firstNumber, secondNumber, sum;

We define integer variables. These are first number with the definition firstNumber, and the second number defined as secondNumber. And the sum. These we defined as integer by writing “int” at the beginning.  

Continue reading TEA BREAK WITH C++: Basic Input & endl