Needing more assistance with a Function Call

[confusedndazed]

Hello all, I need to create a function call to calculate the average...Can anyone help with that?? I'm not sure how to create a function in my code to calculate the average. My code currently terminates after I enter the 50 inputs and does not compute and read the average.

#include <iostream>
using namespace std ;

void displayTitle ()
{
     cout << "Active Duty Navy Personnel Program" << endl ;
}

int main ()
{

    displayTitle () ;
  
    
    int Age[50] ;    // age of personnel
    int I ;          // number of ages entered
    int sum ;        // sum of ages
    float Average ;  // average of ages entered
    sum = 0 ;
    Average = 0 ;
    for (I = 0 ; I < 50 ; I++)
    {
       cout << "Enter current age of AD Navy Personnel" << ( I + 1 ) << endl ;
       cin >> Age[I] ;
        
       if ( Age[I] >=18 ){
          sum = sum + Age[I] ;
       }
       else {
             I = I - 1 ; // the same element the Age array will be read 
        }}
    Average = sum/50 ;
    for ( I = 0 ; I < 50 ; I ++ )
    {
        cout << "Age of Personnel" << ( I + 1 ) << "is : " 
        << Age[I] << endl ;
       }
       cout << "The current average age of AD Navy Personnel is : " 
        << Average << endl ;
        
    cin.get () ;
    return (0) ; // terminate with success
    
}

[jonsca]

What is the output you are getting currently?

There are a couple of options for a function, one is you can pass in Age[] and I

e.g.,

float average(int agearr[],int count)
{
           float ave
           int sum (over all agearr)
           cast sum to a float
           ave = sum divide by I
           return ave
}

and then call it in main() Average = average(Age,I); or if you preferred you could pass in sum and I and have it do the division for you.

[mellowmike]

I compiled your code and ran it, and it showed the average. I'm not sure why you aren't seeing it.

If you want to do a function call, the help jonsca provided should be sufficient, but from what I can tell, your code is working fine now.

[confusedndazed]

Thanks alot Jonsca!!...Can you tell me where this code would need to go?

[jonsca]

Two choices this time too, you can put a prototype float average(int a[],int); at the top (above void displayTitle)
and then put your function definition (what I posted above) after the closing brace of main:

int main()
{

}
float average(,)
{


}

or you can skip the prototype and put the whole thing above void displayTitle()

float average(int agearr[],int count)
{

}

void displayTitle()
{

}
int main()
{


}

[confusedndazed]

OMG you are very helpful!!! You solved my thread, your help is greatly appreciated!! It finally executed properly.

[jonsca]

You're very welcome. :)