3) Write a C++ program to build a simple CALCULATOR using the "switch" statement. options compilation execution options compilation execution Enter 1st num : 23 Enter 1st num : 23 Enter 2nd num : -23 Enter 2nd num : 102 Enter operation [ + or - or * or / ] : + Enter operation [ + or - or • or /]: - Addition of [ 23 + -23 ] = 0 Subtraction of [ 23 - 102 ] = -79 Exit code: 0 (normal program termination) Exit code: 0 (normal program termination) options compilation execution options compilation execution Enter 1st num : 301 Enter 1st num : 230 Enter 2nd num : 2 Enter 2nd num : 2.1 Enter operation [ + or - or • or / ] : * Enter operation [ + or - or • or / ] : / Divide of [ 230 / 2.1 ] = 109.524 Multiplication of [ 301 * 2] - 602 Exit code: 0 (normal program termination) Exit code: 0 (normal program termination) options compilation execution Enter 1st num : 3 Enter 2nd num : 5 Enter operation [ + or - or • or / ] : & Error! operation is not correct Exit code: 0 (normal program termination)

4. Write a program in C to add two numbers using pointers Note: you need to get the input from the terminal

Please help me with this Principles of programming language homework question

I need this code to be with python 3 1. Approach: Non recursive: //include necessary header files#include <iostream>using namespace std;//main functionint main(){    int days,buy_on_this_day ,sell_on_this_day;    //get number of days as input from user    cout<<"Enter number of days: ";    cin>>days;    int stock_price[days];    for(int i=0;i<days;i++)    {   cout<<"Enter stock_price";        cin>>stock_price[i];    }    int i=0;    for(int i=0;i<days-1;i++)    {        //comparing  current price with next day price and finding the  minima        while(i<days-1 && stock_price[i+1]<=stock_price[i])        i++;         if(i==days-1)        break;        buy_on_this_day  =i++;         while(i<days && stock_price[i]>= stock_price[i-1])        i++;        sell_on_this_day =i-1;        cout<<buy_on_this_day <<" : index of the change before  we buy"<<endl;        cout<<sell_on_this_day<<"  :index…