Operator in Cpp programming language
Operator in Cpp programming language
We will learn about Operator in Cpp programming language. C++ provides a rich set of the operator to manipulate variables. We can divide all the C++ operators into the following groups:
- Arithmetic Operators
- Assignment Operators
- Relational Operators
- Unary Operator
- Logical Operators
- Bitwise Operator
C++ Arithmetic Operators
Arithmetic operators are used to calculating mathematical expressions in the same way that they are used in algebra. The following table list the arithmetic operators
Program 1
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int a,b,c,d,e,f,g;
a=20,b=12;
c=a+b;
d=a-b;
e=a*b;
f=a/b;
g=a%b;
cout << "a+b is :"<<c << endl;
cout << "a-b is :"<<d << endl;
cout << "a*b is :"<<e << endl;
cout << "a/b is :"<<f << endl;
cout << "a%b is :"<<g << endl;
getch();
return 0;
}
When we executed above program, it will be produced following result
a+b is : 32 a-b is : 8 a*b is : 240 a/b is : 1 a%b is : 8
C++ Assignment Operator
In C++ Programming, the assignment operator is used for assigning a significant value to a variable. Equal to(=) is a mostly known assignment operator in algebra.
The following table list the assignment operators in C language
Program 1
#include <iostream>
using namespace std;
int main()
{
int a=12,b;
b = a;
cout << "In b=a,b value is:"<<b<< endl;
b += a;
cout << "In b+=a,b value is:"<<b<< endl;
b -= a;
cout << "In b-=a,b value is:"<<b<< endl;
b *= a;
cout << "In b*=a,b value is:"<<b<< endl;
b /= a;
cout << "In b/=a,b value is:"<<b<< endl;
b %= a;
cout << "In b/=a,b value is:"<<b<< endl;
return 0;
}
When we execute the above program, it will be produced the following result
In b=a,b value is: 12 In b+=a,b value is: 24 In b-=a,b value is: 12 In b*=a,b value is: 144 In b/=a,b value is: 12 In b/=a,b value is: 0
C++ Relational Operators
A relational operator compares the relationship between two variables(operands). relational operators perform based on boolean expression and return either true(1) or false(0).
The following table list the relational operators in C++ language
Program 1
#include <iostream>
using namespace std;
int main()
{
int a=20,b=30;
if(a<b){
cout << "a is less than b" << endl;
}
if (a>b){
cout << "a is greater than b" << endl;
}
if (a>=b){
cout << "a is greater than or equal to b" << endl;
}
if (a<=b){
cout << "a is less than or equal to b" << endl;
}
if(a==b){
cout << "a is equal to b" << endl;
}
return 0;
}
When we execute the above program, it will be produced the following result
a is less than b a is less than equal to b
C++ Unary Operator
The following table list the unary operators in C language
Example
#include <iostream>
using namespace std;
int main()
{
//postfix
//int x=1
//int y=x++ , y=1;
//int z=x , z=2
//Example
cout << "Post increment" << endl;
int x=1;
cout << "x value is :" <<x<< endl;
int y=x++;
cout << "y value after x++ is :" <<y<< endl;
cout << "x value after x++ is :" <<x<< endl;
return 0;
}
Program 1 – post-increment
When we executed above program, it will be produced following result
post increment x value is :1 y value after x++ is :1 x value after x++ is :2
Program 2 – pre-increment
#include <iostream>
using namespace std;
int main()
{
//postfix
//int x=1
//int y=x++ , y=1;
//int z=x , z=2
//Example
cout << "Pre increment" << endl;
int x=1;
cout << "x value is :" <<x<< endl;
int y=++x;
cout << "y value after ++x is :" <<y<< endl;
cout << "x value after ++x is :" <<x<< endl;
return 0;
}
When we execute the above program, it will be produced the following result
pre increment x value is :1 y value after ++x is :2 x value after ++x is :2
Program 3 – post-decrement
#include <iostream>
using namespace std;
int main()
{
//postfix
//int x=2
//int y=x-- , y=2;
//int z=x , z=1
//Example
cout << "Post decrement" << endl;
int x=2;
cout << "x value is :" <<x<< endl;
int y=x--;
cout << "y value after x-- is :" <<y<< endl;
cout << "x value after x-- is :" <<x<< endl;
return 0;
}
When we execute the above program, it will be produced the following result
Post decrement x value is :2 y value after x-- is :2
x value after x– is :1
Program 4- pre-decrement
#include <iostream>
using namespace std;
int main()
{
//postfix
//int x=2
//int y=x-- , y=1;
//int z=x , z=1
//Example
cout << "Pre decrement" << endl;
int x=2;
cout << "x value is :" <<x<< endl;
int y=--x;
cout << "y value after --x is :" <<y<< endl;
cout << "x value after --xis :" <<x<< endl;
return 0;
}
When we executed above program, it will be produced following result
pre decrement x value is :2 y value after --x is :1 x value after --x is :1
C++ Logical Operators
In C++ programming, the logical operator performs based on boolean expression, return either true or false.
The following table list the logical operators in C language
Program 1
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int age=20;
if(age>=6 && age<=18){
cout << "you are a students" << endl;
}
else if(age<=6 && age>=18){
cout << "you are not a students" << endl;
}
else{
cout << "you are not a students" << endl;
}
getch();
return 0;
}
When we execute the above program, it will be produced the following result
you are not a students
Program 2
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
cout << "logical operator!" << endl;
//variable declaration
int num1=35,num2=40;
//logical AND
if(num1>=35 && num2>=35){
cout<<"Num 1 and Num 2, both are greater than or equal to 35"<< endl;
}
else{
cout<<"Num 1 or Num 2, both are less than than or equal to 35"<< endl;
}
if(num1>=35 || num2<=35){
cout<<"Num 1 and Num 2, any one of them greater than or equal to 35"<< endl;
}
else{
cout<<"Num 1 and Num 2, both are less than than or equal to 35"<< endl;
}
getch();
return 0;
}
When we execute the above program, it will be produced the following result
logical operator Num 1 and Num 2, both are greater than or equal to 35 Num 1 and Num 2, any one of them greater than or equal to 35
C++ Bitwise Operators
In C++ language. the bitwise operator is an operator used to performs bit or binary pattern operation(bitwise operation).
The following table list the bitwise operators in C language
C++ Other Operators
Operator precedence
Operators are in the top of the list, that gets higher precedence. Operators are in the bottom of the list, that gets lower precedence
The following table list the operator precedence
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