An operator is a symbol which is used to perform some operation on variables, operands and with the constant.
Types of Operators:
- Arithmetic Operator
- Assignment Operator
- Increment Operator
- Decrement Operator
- Relational Operator
- Comma Operator
- Sizeof Operator
- Arithmetic Operator: This operator is used to perform the numeric calculation. And these operators are addition(+), subtraction(-), multiplication(*), division(/).
Unary – Unary Arithmetic Operator requires only one operand +,-,++,– etc.
Binary- This Arithmetic Operator requires two operands and its operator are +,-,*,/ and %(modulus).
- Assignment Operator: Any value can be stored in a variable by using the assignment operator. It is denoted by(=).
eg: – int sum=x+y+z;
- Increment and decrement Operator: The unary operator ++,– is used as increment and decrement operator. The increment operator increases the value by 1 and the decrement operator decreases the value by 1
- Pre-Increment and Post Increment: First increase then the print is Pre-increment. First print then increase is post-increment. Similarly for decrement.
A simple program to understand this concept:
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i;
i=i+1;
i++;
i+=1; // i=i+1
i+=2; // i=i+2
i*=2; // i = i*2
cout << "enter any number" ;
cin >> i; //5
cout << i << endl; // 5
cout << ++i << endl; // 6
cout << i++ << endl; // 6
cout << i << endl; // 7
cout << --i << endl; // 6
cout << i-- << endl; // 6
cout << i << endl; // 5
getch();
}
- Relational Operator: This operator is used to compare the value of two expressions.
eg: (b>a)&&(c>b)
- Conditional Operator: It is also known as the ternary operator because it requires three expressions as operand (? , :).
eg: exp1?exp2:exp3
- Comma Operator: Comma Operator is used to permitting different expression to be appear in a situation where only one expression is used.
eg: for(i=1,j=2;j<=4;j<=10;j++)
- sizeof Operator: https://www.digitaltanmay.com/sizeof-operator-in-cpp/