Question

Write a C++ program that would report all of the Min and Max.

example:
1. 95
2. 95
3. 80
4. 80

lowest 80 on test(s): 3, 4

highest 95 on test(s): 1, 2

I have started it, however, this only outputs one of the Min and Max and not all of the other instances.

#include<iostream>
using namespace std;

int main()
{
 int grades[10] , min , max , minIndex , maxIndex ;    
 int n , choice , rt , fix ;
 int d = 0 ;
 do{
     cout<<"\n\n\nGRADE CENTER\n------------"
         <<"\n1) Enter new grades"
         <<"\n2) Print grades"
         <<"\n3) Print average"
         <<"\n4) Minimum and Maximum "
         <<"\n5) Change a grade"
         <<"\n6) EXIT ";
         
     do{cout<<"\nYour selection? (1-6) ";
         cin>>choice; 
       }while((choice<1)||(choice>6));
     
     if((d==0)&&((choice==2)||(choice==3)||(choice==4)||(choice==5)))
       cout<<"\nNo data entered yet!!";   
     
     if(choice==1)
       {d = 1 ;
        cout<<"\nHow many tests? ";
        cin>> n;
        for(int i=1 ; i<=n; i++)
           {cout<<"\ntest "<< i << " ? ";
            cin>>grades[i]; }
        
      }
    
    if((choice==2)&&(d==1))
       {cout<<"\nGrade Data\n------------";
        for(int i=1 ; i<= n ; i++) 
            cout<<"\ntest "<<i<<" : "<<grades[i];  
       }     
    
    if((choice==3)&&(d==1))
      {rt=0;
       for(int i=1 ; i<=n; i++) rt=rt+grades[i]; 
       cout<<"\nAverage is "<< rt/n ;
      }
         
    if((choice==4)&&(d==1))
      {min = max = grades[1] ;
       minIndex = maxIndex = 1 ;
       for(int i=1 ; i<=n; i++) 
          {if (grades[i]<min) { min=grades[i]; minIndex = i ;}
           if (grades[i]>max) { max=grades[i]; maxIndex = i ;}
          }       
       cout<<"\nLowest was "<< min << " on test " << minIndex
           <<"\nHighest was "<< max << " on test "<< maxIndex  ;
      }
      
    if((choice==5)&&(d==1))
      {cout<<"\nChange test #  ";
       cin>> fix ;
       cout<<"\nChange grade "<<fix<<" from "<<grades[fix]<<" to? ";
       cin>>grades[fix];
       if (grades[fix]<min) { min=grades[fix]; minIndex = fix ;}
       if (grades[fix]>max) { max=grades[fix]; maxIndex = fix ;}
      }
   }while(choice!=6);    
 
 cout<<"\n\n";
 system("pause");
 return 0;
}

Answer 1

#include <iostream>

using namespace std;

#define SIZE 50

int main()

{
    int array[SIZE];
    int i, max, min, size;
    cout<<"Enter size of the array: ";
    cin>>size;
    cout<<"\n Enter "<<size <<" elements in the array: ";
    for(i=0; i<size; i++)
        cin>>array[i];
    max = array[0];
    min = array[0];
    for(i=1; i<size; i++)
    {
        if(array[i] > max)
            max = array[i];
        if(array[i] < min)
            min = array[i];
    }
    cout<<"\nMaximum element =" << max << "\n";
    cout<<"Minimum element =" << min;
    return 0;

}

c++ program to find minimum and maximum element is give above