List and explain different types of operators in C++. Explain function overloading with a suitable program.

 In C++, operators are special symbols used to perform operations on variables and values. There are different types of operators in C++, which are as follows:

1. Arithmetic operators: These operators are used to perform arithmetic operations such as addition, subtraction, multiplication, division, and modulus. For example, +, -, *, /, %.
2. Assignment operators: These operators are used to assign a value to a variable. For example, =, +=, -=, *=, /=, %=.
3. Comparison operators: These operators are used to compare two values and return true or false. For example, ==, !=, <, >, <=, >=.
4. Logical operators: These operators are used to perform logical operations such as AND, OR, and NOT. For example, &&, ||, !.
5. Bitwise operators: These operators are used to perform bitwise operations such as AND, OR, XOR, left shift, and right shift. For example, &, |, ^, <<, >>.
6. Unary operators: These operators are used to perform operations on a single operand. For example, ++, --, !, ~.
7. Ternary operator: This operator is a conditional operator that takes three operands and returns one of them based on the value of the condition. For example, (condition) ? value1 : value2.

Function overloading is a feature in C++ that allows multiple functions to have the same name but different parameters. This feature is used to create functions that perform the same task but with different data types or number of parameters. The compiler selects the appropriate function based on the type and number of arguments passed to the function.

Here's an example program that demonstrates function overloading:

#include <iostream>
using namespace std;
int add(int a, int b)
{
    return a + b;
}
double add(double a, double b)
{
    return a + b;
}
int main()
{
    int x = add(5, 10);
    double y = add(3.14, 2.71);
    cout << "Sum of 5 and 10 is " << x << endl;
    cout << "Sum of 3.14 and 2.71 is " << y << endl;
    return 0;
}

In this program, we have defined two functions with the same name "add" but with different parameters (int and double). The first function takes two integers as arguments and returns their sum, while the second function takes two doubles as arguments and returns their sum. In the main function, we have called both functions with different arguments and displayed the results. The output of the program will be:

Sum of 5 and 10 is 15
Sum of 3.14 and 2.71 is 5.85

As we can see, the compiler has selected the appropriate function based on the type of arguments passed to the function. This is an example of function overloading in C++.