Python program to Illustrate the inheritance of a Class

Python program to Illustrate the inheritance of a Class

Now you are going to execute a class program of C++. The class program is of multilevel inheritance. This also gives output using Python script

Example  - C++ program to implement Multilevel Inheritance

// C++ program to implement Multilevel Inheritance

//Now select File→New in Notepad and type the C++ program

#include <iostream>

using namespace std;

     base class class Vehicle

{

public:

Vehicle()

{

cout<< "This is a Vehicle" <<endl;

}

};

class threeWheeler: public Vehicle { public:

threeWheeler()

{

cout<<"Objects with 3 wheels are vehicles"<<endl;

}

};

//sub class derived from two base classes

class Auto: public threeWheeler{

public:

Auto()

{

cout<<"Auto has 3 Wheels"<<endl;

}

};

//main function

int main()

{

//creating object of sub class will invoke the constructor of base classes

Auto obj;

return 0;

}

// Save this file as inheri_cpp.cpp

//Now select File → New in Notepad and type the Python program

#Save the File as classpy.py

#Python classpy.py -i inheri_cpp command to execute c++ program

import sys, os, getopt

def main (argv):

cpp_file = ''

exe_file = ''

opts, args = getopt.getopt (argv, "i:",['ifile='])

for o, a in opts:

if o in ("-i", "--ifile"):

cpp_file = a + '.cpp'

exe_file = a + '.exe'

run (cpp_file, exe_file)

def run(cpp_file, exe_file):

print ("Compiling " + cpp_file)

os.system ('g++ ' + cpp_file + ' -o ' + exe_file)

print ("Running " + exe_file)

print ("-------------------")

print

os.system (exe_file)

print

if __name__ =='__main__':

main (sys.argv[1:])

Output of the above program

Compiling c:\pyprg\class_file.cpp

Running c:\pyprg\class_file.exe

-------------------

This is a Vehicle

Objects with 3 wheels are vehicles

Auto has 3 Wheels

From all these example One can understand the Python script (program) used for integrating C++ is common. Only the name of the Python script file and the C++ (cpp) file have changed. Remember it is not mandatory to type the C++ coding if one’s computer contain already the C++ file. In this chapter to show all the types of C++ programs like normal, function, inheritance program can be executed through python the coding of C++ is explicitly mentioned. Using this Python script you can even compile and execute C program also. Since python automates the C++ program file to execute without it’s IDE, Python can be called as a Scripting Language.