CONSTANTS, OPERATOR PRECEDENCE AND MANIPULATORS

 CONSTANT 

Constant in c++ are fixed value which  we are not able to change them in our program.

example -> const float pi = 3.14;

MANIPULATORS

In c++ manipulators are used in the formatting of output.

example of manipulators are -> endl and setw

//OPERATOR PRECEDENCE & MANIPULATOR...

#include <iostream>

#include<iomanip> // we include <iomanip> for use of setw manipulator in our program..

 using namespace std;

 int main(){

    cout<<endl;

    cout<<"___CONSTANTS(const) IN C++___"<<endl;

    cout<<endl;

    cout<<"-> constants in c++ are fixed values we are not able to change them in our program. "<<endl;

 const float pi = 3.14;  

    cout<<":the value of pi is -> "<<pi<<endl;

//pi = 3.144 ; // we are not able to change contant. so error will occour because pi is constant...

    cout<<endl;

    cout<<"***MANIPULATOTS IN C++***"<<endl;

    cout<<endl;

    cout<<"-> Manipulators are operators which help us to edit our data display."<<endl;

   

    cout<<"-> types of manipulators -> endl and setw"<<endl;//to use setw we have to include <iomanip> header file

 

 int a = 3, b = 33 ,c = 333;

    cout<<endl;

    cout<<"***WITHOUT SETW OPERATOR. "<<endl;

    cout<<endl;

 

    cout<<":the value of a is = "<<a<<endl;    // WITHOUT

    cout<<":the value of b is = "<<b<<endl;   // SETW

    cout<<":the value of c is = "<<c<<endl;  // OPERATOR

    cout<<endl;

    cout<<"***WITH SETW OPERATOR. "<<endl;

    cout<<endl;

    cout<<"the value of a is = "<<setw(4)<<a<<endl;    // WITH

    cout<<"the value of b is = "<<setw(4)<<b<<endl;   // SETW

    cout<<"the value of c is = "<<setw(4)<<c<<endl;  // OPERATOR

//So yhn pe 4 ks space milega....

cout<<endl;

 

    cout<<"___OPERATOR PRECEDENCE__";

  int d = 6, e = 9;

 

//int f = (d*5)+e;

  int f = (((d*3)+e)-17);//to phale kya solve hogga ye sb depend krta hai

                         //PRECEDENCE TABLE OF C++ PE...

//phale wo solve hogga jo table mai upper hotta hai..

    cout<<endl;

    cout<<"the value of (((d*3)+e)-17) -> ";

    cout<< f;  

    cout<<endl;

    cout<<endl;

    return 0;

}

//OUTPU___CONSTANTS(const) IN C++___ -> constants in c++ are fixed values we are not able to change them in our program. :the value of pi is -> 3.14 ***MANIPULATOTS IN C++*** -> Manipulators are operators which help us to edit our data display. -> types of manipulators -> endl and setw ***WITHOUT SETW OPERATOR. :the value of a is = 3 :the value of b is = 33 :the value of c is = 333 ***WITH SETW OPERATOR. the value of a is = 3 the value of b is = 33 the value of c is = 333 ___OPERATOR PRECEDENCE__ the value of (((d*3)+e)-17) -> 10