Need help with array invertion

[Ouwet5775]

Hey guys
i have been working on a C++ program as a revision for an upcoming final exam.
One of the main point is to know how to create a function that would invert the elements in your array. That one has given me alot of trouble. A tip or a hint would be greatly appriciate it :D

ie: A={1,2,3} -------> A'={3,2,1}

Now i have tried using the fonction on the top of my program but it messed it up for me. and all my output was invalid.

That's the code i have so far and i am sorry in advance if it's difficult to read i have tried making it as esthetic as possible.

#include<iostream>
using namespace std;
#define MAX 100
 
 
int sum( int number[], int n)    // Sum fonction of the n elements of the array.
{
    int z=0;
    for( int i=0;i<n;i++)
        z=z+number[i];
    return (z) ;
}
 
 
 
 
 
 
    int main()
{
    int number[MAX];
    int index;
    int count=0;
    char more;
 
 
 
    do
    {
        cout<<"Enter a value:    ";
        cin>>number[count];
 
            if (number[count]<0 || number[count]>100)   
            {
                cout<<"You have entered a wrong value\n";
                system("pause");
                continue; 
            }
 
 
        cout<<"Any more items to enter y/n:  ";            
        cin>>more;
        count++;
 
    }
 
    while (more!='n');
    int n;
        cout<<"Enter the number of elements you wish to sum up\n";
        cin>>n;
 
 
    cout<<"The  sum is   "<<sum(number,n)<<endl;
 
    for (index=0; index<count;index++)    // calling the elements of the array
    {
        cout<<endl;
        cout<<"The CONTENT OF ARRAY ELEMENT   "<<  index  <<"    "<<"IS  ";
        cout<<number[index];
    }
 
 
    cout<<endl<<"This Array is composed of "<<count<<"  Elements";        
    cout<<endl<<endl;
    return (0);
}
 

Thanks for any help :)

[Ouwet5775]

#include<iostream>
using namespace std;
#define MAX 100
#include <iomanip>
 
 
 
 
int sum( int number[], int n)    // Sum fonction of the n elements of the array.
{
    int z=0;
    for( int i=0;i<n;i++)
        z=z+number[i];
    return (z) ;
}
 
 
 
int find_minimum(int number[], int n)
{
     int minimum=number[0];
     for (int i=0;i<n;i++)
     {
         if(number[i]<minimum)
             minimum=number[i];
     }
     return (minimum);
 }
 
 
 
 int find_maximum(int number[], int n)
{
     int maximum=number[0];
     for (int i=0;i<n;i++)
     {
         if(number[i]>maximum)
             maximum=number[i];
     }
     return (maximum);
 }
 
 
 
 
 
 /*int find_value (const int number[], int v, int target)
 {
     int low=0;
     int mid;
     int high= v-1;
     while(low<=high)
     {
         mid=(low+high)/2;
         if (target>number[mid])
             low=mid+1;
         else if(target<number[mid])
             high=mid-1;
         else
             return (mid);
     }
     return(-1);
 }*/
 
 
 
    int main()
{
    int number[MAX];
    int index;
    int count=0;
    char more;
 
 
 
    do
    {
        cout<<"Enter a value:    ";
        cin>>number[count];
 
            if (number[count]<0 || number[count]>100)    
            {
                cout<<"You have entered a wrong value\n";
                system("pause");
                continue; 
            }
 
 
        cout<<"Any more items to enter y/n:  ";            
        cin>>more;
        count++;
 
    }
 
    while (more!='n');
    int n;
        cout<<"Enter the number of elements you wish Study"<<endl;
        cin>>n;
 
 
    cout<<"\nThe  sum is   "<<sum(number,n)<<endl;
    cout<<"The minimum value is this array is  "<< find_minimum(number,n)<<endl;
    cout<<"The maximum value for this array is  "<<find_maximum(number,n)<<endl;
    cout<<endl <<"This Array is composed of "<<count<<"  Elements"<<endl;
;// number of elements in the array
 
 
 
 
    for (index=0; index<count;index++)            // calling the elements of the array
    {
        cout<<endl;
        cout<<"The CONTENT OF ARRAY ELEMENT   "<<  index  <<"    "<<"IS  ";
        cout<<number[index];
    }
 
 
    /*cout<<endl<<"This Array is composed of "<<count<<"  Elements";*/        // number of elements in the array
    cout<<endl<<endl;
    return (0);
}
 

Updated code

/free bumb ;) still need help

[Ganon11]

How about this:

void invertArray(int[] anArray, int size);
// invertArray creates a new array, called temp, with the same size
// as anArray.  Then, using a for loop going from size - 1 to 0, the
// function sets temp[size - the index - 1] to anArray[the index].
// Finally, the function sets anArray equal to temp with a simple
// for loop.
// Precondition: anArray contains x elements, and size is x.
// Postcondition: anArray contains the same values, but in reverse order.

[Ouwet5775]

How about this:

void invertArray(int[] anArray, int size);
// invertArray creates a new array, called temp, with the same size
// as anArray.  Then, using a for loop going from size - 1 to 0, the
// function sets temp[size - the index - 1] to anArray[the index].
// Finally, the function sets anArray equal to temp with a simple
// for loop.
// Precondition: anArray contains x elements, and size is x.
// Postcondition: anArray contains the same values, but in reverse order.

Am not near a compiler at the moment but i think that should do it.
Just one question tho, i am creating a new array with the same size as my previous one right ?

And let's say i dont enter any value for my initial array how could i put a safety mechanism that won't call this function ?

Thanks for your help :)