Gain insights into dynamic memory allocation, creating classes, and functions. Delve into inheritance, I/O, exception handling. Explore 90+ examples to master advanced C++ functionalities.

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If you’re looking to sharpen up your C++ programming skills, then you’re in the right place. You will start with learning about dynamic memory allocation, how to create classes, and constructors. 

In the latter half of the course, inheritance, functions, I/O, exception handling, and more. Throughout the course, you will study over 90 carefully designed examples aimed to enhance your understanding of the C++ language.  

By the time you finish this course, you will be able to use more advanced functionality in your C++ programs.

C++ Programming for Experienced Engineers

## Problem

Rewrite program in “[Number Class with Methods defined Inside it](https://www.educative.io/courses/cpp-programming-experienced-devs/number-class-with-methods-defined-inside-it)”  so that the `Number` class is stored in a static library.
 

## Solution

Here is a solution to the above problem. You have to press the “**Run**” button to get the terminal window under the code widget. After that, you will be able to create a static library using the given commands. 

**Create static library using command-line**

If you wish to build the project using the *command-line*, carry out the following steps:

1. Compile `Number.cpp` to create the object file.
    ```txt 
    g++ -c Number.cpp -o Number.o
    ```

2. Group the `Number.o` object file in a static library `lib_NumberStaticLib.a ` with `.a` extension. Now this static library is ready to use. 
    ```txt
    ar rcs lib_NumberStaticLib.a Number.o
    ```

3. Let's compile `main.cpp` to create its object file.
    ```txt
    g++ -c main.cpp -o main.o
    ```

4. In this step, we'll link our `main.o` object file with our static library using the given command. This would have created the executable `main.out` file.
    ```txt
    g++ -o main.out main.o -L. -l_NumberStaticLib
    ``` 

5. Execute it using the following command:
    ```txt
    ./main.out
    ```


# Problem

Rewrite program in “[Number Class with Methods defined Inside it](https://www.educative.io/courses/cpp-programming-experienced-devs/number-class-with-methods-defined-inside-it)”  so that the `Number` class is stored in a static library.
 

# Solution

Here is a solution to the above problem. You have to press the “**Run**” button to get the terminal window under the code widget. After that, you will be able to create a static library using the given commands. 

**Create static library using command-line**

If you wish to build the project using the *command-line*, carry out the following steps:

1. Compile `Number.cpp` to create the object file.
    ```txt 
    g++ -c Number.cpp -o Number.o
    ```

2. Group the `Number.o` object file in a static library `lib_NumberStaticLib.a ` with `.a` extension. Now this static library is ready to use. 
    ```txt
    ar rcs lib_NumberStaticLib.a Number.o
    ```

3. Let's compile `main.cpp` to create its object file.
    ```txt
    g++ -c main.cpp -o main.o
    ```

4. In this step, we'll link our `main.o` object file with our static library using the given command. This would have created the executable `main.out` file.
    ```txt
    g++ -o main.out main.o -L. -l_NumberStaticLib
    ``` 

5. Execute it using the following command:
    ```txt
    ./main.out
    ```


Learn to create a class stored in a static library.

Getting Off the Ground

Starters

Basic C++ Examples

Class Organization Examples

Class Constructor Examples

Classes and Objects Examples

More Classes and Objects Examples

Function Examples

Function Overloading Examples

Operator Overloading Examples

Free Store Examples

Inheritance Examples

Virtual Function Examples

Input Output Examples

Template Examples

Exception Handling Examples

STL Examples

Miscellaneous Examples

Conclusion

Number Class in a Statically Linked Library

Problem

Solution