Question

In this question you have to write a complete function. MyMedia Publishers uses two parallel arrays to keep track of the number of subscriptions for each of their 50 publications. Array publications holds the names of the magazines and newspapers published and array subscriptions holds the number of subscriptions for each corresponding magazine or newspaper. You have to write a void function, called findMost Subs to determine which publication has the most subscribers. Function findMost Subs has to return the name of the publication as well as the number of subscribers to that publication. Assume the following: a declaration of a global constant: const int NUM_PUBS = 50; //number of publications four declaration statements in the main function: string publications [NUM_PUBS]; // titles of the publications int subscriptions [NUM_PUBS]; // number of subscriptions for the // corresponding publications int nrMost Subscriptions; // number of subscriptions for // publication with most subscriptions string most Subscriptions; // title of publication with most // subscriptions values have been assigned already to all the elements of the arrays the function is called in the main program as follows: findMost Subs (publications, subscriptions, mostSubscriptions, nrMost Subscriptions);

Answer 1

solution:

given data:

void findMostSubs(string publ[],int subs[], string * publication, int * nrsub)
{
   *nrsub=0; //to store max subscribers ...function is call by reference
   int index=0; //index of array elements
   int max_index=0; //index of max subscribers
   for(;index<50;index++)
       if(*nrsub<subs[index])
       {
           max_index=index; //whenever nrsub is less than subs[index] change max_index and nrsub.
           *nrsub=subs[index];
       }
   *publication=publ[max_index]; //finally store max_index element from publications to mostSubscriptions .
}

//code is tested with main in the below format:please find the code:

#include<iostream>
#include<string>
using namespace std;
const int NUM_PUBS=50; //number of publications
void findMostSubs(string publ[],int subs[], string * publication, int * nrsub)
{
   *nrsub=0;
   int index=0;
   int max_index=0;
   for(;index<50;index++)
       if(*nrsub<subs[index])
       {
           max_index=index;
           *nrsub=subs[index];
       }
   *publication=publ[max_index];
}

int main()
{
   string pulbications[NUM_PUBS]={"a","b","c","d","f"};
   int subscriptions[NUM_PUBS]={1,2,3,1,7};
   int nrMostSubsriptions;
string mostSubscriptions;
   findMostSubs(pulbications,subscriptions,&mostSubscriptions,&nrMostSubsriptions);
   cout<<"most number of subscribers are="<<nrMostSubsriptions<<" for publication "<<mostSubscriptions<<endl;
}

  
output:

Your Code's Output

most number of subscribers are=7 for publication f

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