Question

2. Write a C++ program, that generates a set of random integers and places them in an array. The number of values generated and their range are entered by the user. The program then continually prompts the user for one of the following character commands: a: display all the values I: display the values less than a given value g display the values greater than a given value e: display all odd values o: display all even values q: quit the program An error message should be printed for an illegal command entry. You are required to define and use the following functions: // prints the values in the array on a single line with // a space between each value. total gives the number of // elements in the array void print (int arr [], int total); // populate places total elements in the array with random // values between low and high inclusive void populate (int arr [], int total, int low, int high); // find_greater finds the elements in the array arr that // are greater than val and places them in the array // result. total is the number of elements in the arr array // and result_total is the number of elements placed in the // array result. void find_greater (int arr [], int result [], int val, int total, int& result_total); // find less finds the elements in the array arr that // are less than val and places them in the array result. // total is the number of elements in the arr array and // result_total is the number of elements placed in the // array result. void find_less (int arr [], int result [], int val, int total, int& result_total); // find_odd finds the elements in the array arr that // are odd and places them in the array result. // total is the number of elements in the arr array and // result_total is the number of elements placed in the // array result. void find odd (int arr [], int result [], int total, int& result_total); // find_even finds the elements in the array arr that // are even and places them in the array result. // total is the number of elements in the arr array and // result_total is the number of elements placed in the // array result. void find_even (int arr [], int result [], int total, int& result_total); The functions that you define should have the same prototypes and work as described above. Note that the "find" functions do not print the results. Instead they put the appropriate values in the result array. The print function can then be called to display these elements. There will be no more than 30 elements in the in the array.

Answer 1

#include<bits/stdc++.h>
using namespace std;

void print(int arr[],int total)
{
    for(int i=0;i<total;i++)
    {
        cout<<arr[i]<<" ";
    }
    cout<<endl;
}
void populate(int arr[],int total,int low ,int high)
{
    int value;
    for(int i=0;i<total;i++)
   {
       cin>>value;
       if(value<low||value>high)
       {
           cout<<"Enter value in given range"<<endl;
           i=i-1;

       }
       else
       {
           arr[i]=value;
       }
   }

}

void find_greater(int arr[],int result [],int val,int total,int &result_total)
{
    int k=0;
    for(int i=0;i<total;i++)
    {
        if(arr[i]>val)
        {
            result[result_total++]=arr[i];
        }
    }

}

void find_less(int arr[],int result [],int val,int total,int &result_total)
{
    int k=0;
    for(int i=0;i<total;i++)
    {
        if(arr[i]<val)
        {
            result[result_total++]=arr[i];
        }
    }

}

void find_odd(int arr[],int result [],int total,int &result_total)
{
    int k=0;
    for(int i=0;i<total;i++)
    {
        if(arr[i]%2!=0)
        {
            result[result_total++]=arr[i];
        }
    }

}

void find_even(int arr[],int result [],int total,int &result_total)
{
    int k=0;
    for(int i=0;i<total;i++)
    {
        if(arr[i]%2==0)
        {
            result[result_total++]=arr[i];
        }
    }

}

int main()
{
   int total,low,high;
   cout<<"Enter the number of element ";
   cin>>total;
   cout<<"Enter the lowest possible value ";
   cin>>low;
   cout<<"Enter the highest possible value ";
   cin>>high;

   int arr[40],result[40];
   int result_total=0;
   populate(arr,total,low,high);

char input;
int val;
while(1)
{
      cout<<"Enter one o a (all),g (greater), l (less), e (even), o (odd), q(quit) ";
      cin>>input;
      switch(input)
    {
        case 'a':
            print(arr,total);
            break;

        case 'g':
            cout<<"Enter the value ";
            cin>>val;
            find_greater(arr,result,val,total,result_total=0);
            print(result,result_total);
            break;

        case 'l':
            cout<<"Enter the value ";
            cin>>val;
            find_less(arr,result,val,total,result_total=0);
            print(result,result_total);

            break;

        case 'e':
            find_even(arr,result,total,result_total=0);
            print(result,result_total);

            break;

        case 'o':
            find_odd(arr,result,total,result_total=0);
            print(result,result_total);

            break;

        case 'q':
            return 0;
            break;

        default:
            cout<<"Must enter one of a,g,l,e,o or q"<<endl;
    }

}

}

output-

C:\Users\hp\Documents\check.exe Enter the number of element 3 Enter the lowest possible value 5 Enter the highest possible value 15 10 11 12 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), q(quit) a 10 11 12 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), g(quit) g Enter the value 10 11 12 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), g(quit) i Enter the value 11 10 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), q(quit) e 10 12 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), 9(quit) o 11 Enter one o a (all),g (greater), 1 (less), e (even), o (odd), 9(quit) q Process returned © (@xe) execution time : 44.676 s Press any key to continue.