CPP - Operator

 

CPP

Operator

Fill in the blanks

1.Write a header file for Manipulators iomanip.h

2.Setw header file iomanip.h .

3.Logical NOT  operator symbol   !

4.float a=8.94778899.setpricision(3)= 8.947 .

5. ::  symbol means  Scope resolution Operator

6. int a=8; a%3 =   2

7.int a=8;int b=3;  (a>b)? a: b;       8

8.Conditional Operator also called Ternery Operator

9. main function give first preference to global variable.[T/F].  False

10. int a=9;int b=4;( (++a)  + ( b++))=    14

 

Answer the following Question

                                                              (4 marks)

        1.   Write a program for Arithmetic operator

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a + b = " << (a + b) << endl;

cout << "a - b = " << (a - b) << endl;

cout << "a * b = " << (a * b) << endl;

cout << "a / b = " << (a / b) << endl;

cout << "a % b = " << (a % b) << endl;

getch();

}

        2.   Write a program for Logical operator

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << ((a==5)&&(b==3)) << endl;

cout << ((a==5)||(b==3)) << endl;

cout << (!a) << endl;

getch();

}

        3.   Write a program for Conditional operator

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=10,b=5,c;

    c=(a>b) ? a : b;

    cout<<"Greatest number is "<<c;

    getch();

}

        4.   Write a program for Bitwise operator

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a & b = " << (a & b) << endl;

cout << "a | b = " << (a | b) << endl;

cout << "a ^ b = " << (a ^ b) << endl;

cout << "~a = " << (~a) << endl;

cout << "a <<2 = " << (a<<2 ) << endl;

cout << "a >>2 = " << (a>>2 ) << endl;

getch();

}

        5.   Write a program for Assignment operator

#include <iostream.h>

#include<conio.h>

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a + = " << (a +=3 ) << endl;

cout << "a - = " << (a - =2) << endl;

cout << "a * = " << (a * =3) << endl;

cout << "a / = " << (a / =2) << endl;

getch();

}

        6.   Write a program for Unary operator

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=5,b=++a;

    clrscr();

    cout<<"b="<<b<<endl<<"a="<<a;

    getch();

}

        7.   Write a program for Relational operator

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a < b = " << (a < b) << endl;

cout << "a <= b = " << (a <= b) << endl;

cout << "a > b = " << (a > b) << endl;

cout << "a >= b = " << (a >= b) << endl;

cout << "a == b = " << (a == b) << endl;

cout << "a != b = " << (a != b) << endl;

getch();

}

        8.   Write a program for Scope Resolution Operator

#include <iostream.h>  

#include<conio.h>

     int a= 50;  

     void main ()  

{  

      int a= 100;  

     cout << " The value of the local variable a: " << a;     

     cout << "\n The value of the global variable a: " << ::a;   

    getch();  

      }  

 

Answer the following Question

                                                                                      (10 marks)

1.   Explain 7 operator .Write a program for 7 operator.

C++ Operators

• Arithmetic Operators
• Relational Operators
• Logical Operators
• Bitwise Operators
• Assignment Operator
• Unary operator
• Ternary or Conditional Operator
• scope resolution operator

o       C++ Arithmetic Operators

Operator	Operation
+	Addition
-	Subtraction
*	Multiplication
/	Division
%	Modulo Operation (Remainder after division)

 

Arithmetic Operators

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a + b = " << (a + b) << endl;

cout << "a - b = " << (a - b) << endl;

cout << "a * b = " << (a * b) << endl;

cout << "a / b = " << (a / b) << endl;

cout << "a % b = " << (a % b) << endl;

getch();

}

 

Relational Operators

operator	Meaning	Example
==	Is Equal To	3 == 5 gives us false
!=	Not Equal To	3 != 5 gives us true
>	Greater Than	3 > 5 gives us false
<	Less Than	3 < 5 gives us true
>=	Greater Than or Equal To	3 >= 5 give us false
<=	Less Than or Equal To	3 <= 5 gives us true

 

 

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a < b = " << (a < b) << endl;

cout << "a <= b = " << (a <= b) << endl;

cout << "a > b = " << (a > b) << endl;

cout << "a >= b = " << (a >= b) << endl;

cout << "a == b = " << (a == b) << endl;

cout << "a != b = " << (a != b) << endl;

getch();

}

 

Unary Operator

PreIncrement                            Post  Increment

int a=5                                       int a=5

int b=++a                                   int b=a++

b=6                                            b=5

a=6                                            a=6

Predecrement                          Post  decrement

int a=5                                       int a=5

int b=--a                                   int b=a--

b=4                                            b=5

a=4                                            a=4

 

PreIncrement

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=5,b=++a;

    clrscr();

    cout<<"b="<<b<<endl<<"a="<<a;

    getch();

}

Post Increment

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=5,b=a++;

    clrscr();

    cout<<"b="<<b<<endl<<"a="<<a;

    getch();

}

Predecrement

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=5,b=--a;

    clrscr();

    cout<<"b="<<b<<endl<<"a="<<a;

    getch();

}

Post decrement

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=5,b=a--;

    clrscr();

    cout<<"b="<<b<<endl<<"a="<<a;

    getch();

}}

 

Conditional Operator

 

(condition)  ?  true_value  :  false_value;

 

#include <iostream.h>

#include <conio.h>

void main()

{

    int a=10,b=5,c;

    c=(a>b) ? a : b;

    cout<<"Greatest number is "<<c;

    getch();

}

 

C++ Assignment Operators

Operator	Example	Equivalent to
+=	a += 3;	a = a + 3;
-=	a -= 2;	a = a - 2;
*=	a *= 3;	a = a * 3;
/=	a /= 2;	a = a / 2;

 

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a + = " << (a +=3 ) << endl;

cout << "a - = " << (a - =2) << endl;

cout << "a * = " << (a * =3) << endl;

cout << "a / = " << (a / =2) << endl;

getch();

}

 

C++ Logical Operators

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << ((a==5)&&(b==3)) << endl;

cout << ((a==5)||(b==3)) << endl;

cout << (!a) << endl;

getch();

}

 

C++ Bitwise Operators

Operator	Description
&	Binary AND
|	Binary OR
^	Binary XOR
~	Binary One's Complement
<<	Binary Shift Left
>>	Binary Shift Right

 

#include <iostream.h>

#include<conio.h>

 

void main() {

int a, b;

clrscr();

cout<<"Enter a & b value ";

cin>>a>>b;

cout << "a & b = " << (a & b) << endl;

cout << "a | b = " << (a | b) << endl;

cout << "a ^ b = " << (a ^ b) << endl;

cout << "~a = " << (~a) << endl;

cout << "a <<2 = " << (a<<2 ) << endl;

cout << "a >>2 = " << (a>>2 ) << endl;

getch();

}

 

 Scope Resolution Operator

    #include <iostream.h>  

    #include<conio.h>

     int a= 50;  

     void main ()  

{  

      int a= 100;  

     cout << " The value of the local variable a: " << a;  

    cout << "\n The value of the global variable a: " << ::a;   

    getch();  

      }