Ad:

C++ Discussion Thread
Marked Solved
Views: 1718

Nov 2nd, 2009

Finding Highest, Lowest, and Average in an Array

Expand Post »

C++ Syntax (Toggle Plain Text)
#include <iostream>   
using namespace std;
 
int main()
 
{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
                 }
     }
   cout<< "The entered test scores are: ";
 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
 
system("PAUSE");
 
}
#include <iostream>   
using namespace std;
    
int main()

{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
                 }
     }
   cout<< "The entered test scores are: ";
                 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
   
system("PAUSE");

}

I am trying to find the highest, lowest and average in this array. I can get the average, but I am not sure how to get it to pull the highest and lowest values that are entered.

Similar Threads

calculating sum, average, highest and lowest grades in Visual Basic 4 / 5 / 6
getting my code for highest and lowest value in a numeric array to work in C++
ignoring values if it is the highest or lowest... in C
How do I get the highest and lowest of an array? in Pascal and Delphi
How can I get Highest, Lowest and Average ? in C++

nateysmith

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

4 posts
since Nov 2009

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

Create a couple more variables ("minimum" and "maximum" for example) and initialize them to the first value in the array. Then during this loop:

C++ Syntax (Toggle Plain Text)
for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";

keep comparing them with testScore[a] to see if they are the lowest or highest numbers.
I hope this helps, without giving away too much information.

mikiurban

Reputation Points: 27

Solved Threads: 17

Junior Poster in Training

Offline

63 posts
since Oct 2009

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

I am not really sure what you mean. Can you show me an example? I have just been working on this for 5 hours now and I can't see what is going wrong.

nateysmith

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

4 posts
since Nov 2009

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

C++ Syntax (Toggle Plain Text)
#include <iostream>   
using namespace std;
 
int main()
{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
                 }
     }
   cout<< "The entered test scores are: ";
 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
 
system("PAUSE");
 
}
#include <iostream>   
using namespace std;
    
int main()
{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
                 }
     }
   cout<< "The entered test scores are: ";
                 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
   
system("PAUSE");

}

Click to Expand / Collapse Quote originally posted by mikiurban ...

Create a couple more variables ("minimum" and "maximum" for example) and initialize them to the first value in the array. Then during this loop:
C++ Syntax (Toggle Plain Text)
for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
for (a = 0; a < testNum; ++a) cout<<testScore[a]<<" ";
keep comparing them with testScore[a] to see if they are the lowest or highest numbers.
I hope this helps, without giving away too much information.

I think it would be better to compare the minimum and maximum in the WHILE loop instead of the FOR loop, as suggested above, though either is doable. Assuming you do it in the While loop, here's some revised code that can get you on the right track:

C++ Syntax (Toggle Plain Text)
#include <iostream>   
using namespace std;
 
int main()
 
{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
 
   int minimum = testScore[testNum];  // initialize to first score.
   int maximum = testScore[testNum];  // initialize to first score.
 
 
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
 
                            if (/* compare testScore[testNum] to minimum */)
                            {
                                 minimum = testScore[testNum];
                            }
                            if (/* compare testScore[testNum] to maximum */)
                            {
                                 maximum = testScore[testNum];
                            }
                 }
     }
   cout<< "The entered test scores are: ";
 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
 
   // display maximum and minimum.
 
system("PAUSE");
 
}
#include <iostream>   
using namespace std;
    
int main()

{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];

   int minimum = testScore[testNum];  // initialize to first score.
   int maximum = testScore[testNum];  // initialize to first score.


   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];

                            if (/* compare testScore[testNum] to minimum */)
                            {
                                 minimum = testScore[testNum];
                            }
                            if (/* compare testScore[testNum] to maximum */)
                            {
                                 maximum = testScore[testNum];
                            }
                 }
     }
   cout<< "The entered test scores are: ";
                 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;

   // display maximum and minimum.
   
system("PAUSE");

}

See lines 19, 20, 32 - 39, and 49, which I have added. Line 49 is a simple cout statement. Look at lines 32 and 36. You need to test for the appropriate conditions and fill that in where the comment is.

VernonDozier

Featured Poster

Reputation Points: 2614

Solved Threads: 687

Posting Expert

Offline

5,375 posts
since Jan 2008

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

I think I have it now. Take a look and let me know.

C++ Syntax (Toggle Plain Text)
#include <iostream>   
using namespace std;
 
int main()
 
{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];
 
   int minimum = testScore[testNum];  // initialize to first score.
   int maximum = testScore[testNum];  // initialize to first score.
 
 
   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];
 
                            if (testScore[testNum] < minimum)
                            {
                                 minimum = testScore[testNum];
                            }
                            if (testScore[testNum] > maximum)
                            {
                                 maximum = testScore[testNum];
                            }
                 }
     }
   cout<< "The entered test scores are: ";
 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;
 
   cout<<"The highest score is "<<maximum<<" and the lowest score is "<<minimum<<endl;
 
system("PAUSE");
 
}
#include <iostream>   
using namespace std;
    
int main()

{
   int TESTS = 0;
   int testScore[TESTS];
   int testNum = 0;
   int a;
   double total = 0;
   double average;
   testNum = 0;
   cout<<"How many scores are there? ";
   cin >> TESTS;
   cout<<"Enter a score: ";
   cin >> testScore[testNum];

   int minimum = testScore[testNum];  // initialize to first score.
   int maximum = testScore[testNum];  // initialize to first score.


   while(testNum < TESTS && testScore[testNum])
     {
                 total += testScore[testNum];
                 ++testNum;
                 if(testNum < TESTS)
                 {
                            cout<<"Enter a score: ";
                            cin>>testScore[testNum];

                            if (testScore[testNum] < minimum)
                            {
                                 minimum = testScore[testNum];
                            }
                            if (testScore[testNum] > maximum)
                            {
                                 maximum = testScore[testNum];
                            }
                 }
     }
   cout<< "The entered test scores are: ";
                 
   for (a = 0; a < testNum; ++a)
     cout<<testScore[a]<<" ";
   average = total / testNum;
   cout<<endl<<"The average test score is "<<average<<endl;

   cout<<"The highest score is "<<maximum<<" and the lowest score is "<<minimum<<endl;
   
system("PAUSE");

}

nateysmith

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

4 posts
since Nov 2009

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

Looks good to me. Try it out. Does it work?

VernonDozier

Featured Poster

Reputation Points: 2614

Solved Threads: 687

Posting Expert

Offline

5,375 posts
since Jan 2008

Permalink

Nov 2nd, 2009

Re: Finding Highest, Lowest, and Average in an Array

It does!! Thanks for your help you have been awesome!

nateysmith

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

4 posts
since Nov 2009

This thread is solved

Either the thread starter or a moderator has marked this thread as solved. You can most likely trust the responses and answers given. There is most likely no reason for any further responses to be posted here. If you have a related question, please start a new thread in this forum instead.

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C++ Forum Timeline: C++ Assighment

Next Thread in C++ Forum Timeline: Array rotate in wrong way

DaniWeb Message

Cancel Changes

User Name
Password