Question

using c++

13 do pretty much whatever they want Exercise: Array Resizing You will create an array manipulation program that allows the user is to pre much whatever meant to ananas Wananching the program the user will passat are the contains a set of value and that w 2 Check to see the could be opened at the program was not opened the continue 3. Create an array and with the values from Presente en de h and powermany reded to promot 5 Contender vant to quit e program how many as we need e d permanent $ 1 .tits Description • The user will provide a position to insert a value You must obtain a vald position before moving on • Obtain the value to insert and insert into the array NOTE: The array will be one clement larger after The user we provide a position to remove a value You must avand position before moving on Once you have a valid position remove that w e - NOTE The atay will be one element smaller after Canave from the Tee them how many times that values in the anay • Print the contents of the array in the following format: [1, 3, 99] • Exits the program Sample Menu Remember, this menus comes after the user tills the initial array, Make a selection 1) Insert 2) Remove

Answer 1

Cpp Language :

#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;
int *insert(int arr[],int (&size),int value,int position){
   int *numbers = (int *)malloc((size-1)*sizeof(int));
   int i,j=0;
   for(i=0;i<size;i++){
       *(numbers+i) = arr[i];
   }
   for(i=size;i>=position;i--){
       *(numbers+i) = *(numbers+(i-1));
   }
   numbers[position] = value;
   size++;
   return numbers;
}
int *remove(int arr[],int (&size),int position){
   int *numbers = (int *)malloc((size-1)*sizeof(int));
   int i,j=0;
   for(i=0;i<size;i++){
       if(i != position){
           *(numbers+j) = arr[i];
           j++;
       }
   }
   delete[] arr;
   size--;
   return numbers;
}

int Count(int arr[],int size,int target){
   int count = 0,i=0;
   for(i=0;i<size;i++){
       if(target == arr[i]){
           count++;
       }
   }
   return count;
}
void print(int arr[],int size){
   int i=0;
   cout << "Elements in array: " << endl;
   for(i=0;i<size;i++){
       cout << arr[i] << " ";
   }
   cout << "\n" << endl;
}
int main(int argc,char *argv[]){
   //checking sufficient command lines arguments entered or not
   if (argc == 3){
       int length = atoi(argv[2]);
       int *numbers = new int[length];
       int x,i=0;
       //object to read file data
       ifstream read;
       //opening the file
       read.open(argv[1]);
       if(!read){
           //if file not found this messaege prints
           cout << "entered file is not exists"<< endl;
           return 0;
       }
       while(read >> x){
           //storing the numbers from the file to the array
           numbers[i++] = x;
       }
       //menu
       int choice,index,count=0,value=0,position=0;
       //repeat until user exists
       do{
           cout << "Selection" << endl;
           cout << "1) Insert" << endl;
           cout << "2) Remove" << endl;
           cout << "3) Count" << endl;
           cout << "4) print" << endl;
           cout << "5) Exit" << endl;
           cout << "Choice: ";
           //taking the choice from user
           cin >> choice;
           cout << endl;
           switch(choice){
               //inserting the value in the array
               case 1:
                   cout << "Enter a element to insert: ";
                   cin >> value;
                   cout << "Enter a position to insert: ";
                   cin >> position;
                   if(position < length){
                       numbers = insert(numbers,length,value,position);
                       cout << "Inserted\n" << endl;
                   }else{
                       cout << "Invalid position";
                   }
                   break;
               //deleting a nubmer entered
               case 2:
                   cout << "Enter a position to delete: ";
                   cin >> position;
                   if(position < length){
                       numbers = remove(numbers,length,position);
                   }else{
                       cout << "Invalid position";
                   }
                   break;
               //counting no.of times entered element is occured in array
               case 3:
                   cout << "Enter a element to count: ";
                   cin >> x;
                   count = Count(numbers,length,x);
                   if(count != 0){
                       cout << x << " finds " << count << " times\n" << endl;
                   }else{
                       cout << x << " is not found\n" << endl;
                   }
                   break;
               //displaying the array
               case 4:
                   print(numbers,length);
                   break;  
               //if user wants to exit this message prints
               case 5:
                   cout << "Thank You for using our application\n" << endl;
                   break;
               default:
                   cout << "Invalid option.Try again\n" << endl;
                   break;
           }   
       }while(choice != 5);
   }else{
       cout << "Enter command line arguments : filename and no.of elements to read" << endl;
   }
}

nums.txt :

Open A nums.txt - /Desktop

Output :

varma@varma-Latitude-3490:-/Desktop$ 9++ menu.cpp varma@varma-Latitude-3490:-/Desktop$.a.out Enter command line arguments : filename and no.of elements to read varmavarma-Latitude - 3490:-/Desktop$ ./a.out nums.txt 5 Selection 1) Insert 2) Remove 3) Count 4) print 5) Exit Choice: 4 Elements in array: 2 77 31 36 Selection 1) Insert 2) Remove 3) Count 4) print 5) Exit Choice: 1 Enter a element to insert: 2 Enter a position to insert: 2 Inserted Selection 1) Insert 2) Remove 3) Count 4) print 5) Exit Choice: 4

Elements in array: 2 77 2 31 3 6 Selection 1) Insert 2) Remove 3) Count 4) print 5) Exit Choice: 5 Thank You for using our application

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