Question

Examine the C++, Python, and Java codes that do swap two values, which one you think is the best, which one you think is the worse – Note: identify the language evaluation criteria you used, but no need to justify.

Answer 1

C++ PROGRAM

//include required library file
#include <iostream>

//use nmaespace
using namespace std;

//main function defintion
int main()
{
//declare and initialize the required variables
int a = 10, b=20, temp;
  
//print the values before swapping
std::cout << "a = " <<a <<", b = "<<b << std::endl;
  
//code to swap
temp = a;
a=b;
b=temp;
  
//print the values after swapping
std::cout << "a = " <<a <<", b = "<<b << std::endl;

return 0;
}

JAVA PROGRAM

//Main class definition
public class Main
{
  
////main function defintion
   public static void main(String[] args) {
   //declare and initialize the required variables
   int a = 10, b=20, temp;
  
   //print the values before swapping
       System.out.println("a = " + a + ", b = " + b);
      
       //code to swap
       temp = a;
a=b;
b=temp;
      
       //print the values after swapping
       System.out.println("a = " + a + ", b = " + b);
   }
}

PYTHON PROGRAM

#declare and initialize two variables with values
a = 10
b = 20

#print the values
print('a = ',a , ", b = ",b)
# create a temporary variable and use it to swap the values
temp = a
a = b
b = temp

#print the values after swapping
print('a = ',a, ", b = ",b)

EXPLANATION

-> Python is the best

-> C++ is the worst

(Simplicity is the criteria used for comparison)