C++

• Introduction
• Getting Output
• Datatype
• Variable Declaration
• Operator
• String Concatenation
• Getting input from user
• Working on Angles
• Escape Sequence
• Conditional Statements
• If statement
• Switch statement
• Loop
• While Loop
• For Loop
• Do While Loop
• Array
• Foreach Loop
• Multi dimensional array
• Nested Loop
• Jump Statements
• String Handling Function
• Methods or Functions
• Passing Parameter
• Method Overloading
• Void Method
• Returning Method
• Class
• Creating New Instance
• Constructor
• Constructor Overloading
• Destructor
• Inheritance
• Multi Level Inheritance
• Multiple Inheritance
• Sealed Class
• Pointers
• Upcasting
• Virtual Method
• Pure Virtual Method
• Enum
• Inline Function
• Validation of data
• Virtual Destructor
• Namespace
• Header File
• Exception Handling
• File Handling

Getting input from user

We already studied how to print values in console using cout. Now we going to study how to get input from user using cin where "c" refers to "character" and "in" means "input". Thus, cin means "character input". In the following code example, the user can input a number, which is stored in the variable num. Then we print its cube value.

NOTE:
We going to use a predefined method called pow() which is used to find power of a number. Like this there are lot pre defined methods available for simple mathematical calculcations like sin(), sqrt(), round() etc.

CODE

#include <iostream>
using namespace std;
int main() {
    //creating a variable to store entered value
    int num;

    // Instructing user to enter number
    cout << "Enter Number : ";

    // Getting input from user, storing it in num variable
    cin >> num;

    // Printing cube value in console
    cout << pow(num, 3) << endl; //pow(num,3) is the short way of writing num power 3
}

OUTPUT
27

Exercises
1. Get A and B Value, Find (A + B)^2 value using its Formula
2. Get A and B Value, Find (A - B)^2 value using its Formula
3. Get A and B Value, Find (A + B)^3 value using its Formula
4. Get A and B Value, Find (A - B)^3 value using its Formula

(Click Here, For more exercises)