Question

Write a program that incorporates these functions and statements: • list • while loop • for loop • if • print() • input() • concatenation

This program must create a grocery shopping list based on the user input • the program will ask a user to enter a new grocery item until the user presses Enter • then all user input will be added to a list • then the list with all grocery items will be printed

Answer 1

Since, you haven't mentioned any preferred language, i assume language is not an issue and program is all that matters.

C++

#include <bits/stdc++.h>
using namespace std;
vector<string>grocery_list; ///list
vector<string> input(string str)
{
int n=str.length();
int startIndex=0;
vector<string>temp;

///////FOR LOOP///////////
for(int i=0;i<=n;i++)
{
//If statement
if((str[i]=='\0')||(str[i]==','))
{
temp.push_back(str.substr(startIndex,i-startIndex));
startIndex=i+1;
}

}
return temp;

}
void print()
{
int index=0;
cout<<endl<<endl;
cout<<"*****************LIST************************\n";
////WHILE LOOP////
while(index<grocery_list.size())
{
cout<<"\t\t"<<grocery_list[index]<<endl;
index++;
}
cout<<"*********************************************\n";

}

int main()
{

cout<<"Enter the grocery item: ";

string str; getline(cin,str);
grocery_list=input(str); ///input function
print(); ///print function

  

   return 0;
}

OUTPUT:

I have tried my best to complete all the functionalities the way u asked for. If you feel difficulty in understanding any portion or any functionality, do let me know in the comment box.