Question on Arrays

[Chapin247]

So I need help on array problems and i have to ask the user for their name, phone number, 5 test scores, the average of their test scores and show in the output their lowest and highest scores. So far I have this:



#include <iostream>
#include <string>
using namespace std;

int main()
{

string name;
string pnumber;
string address;
double scores[4];
int i;
double avg;
int highest = 100, lowest= 0.0;

cout << "What is your name? ";
getline(cin, name);


cout <<"What is your phone number? ";
cin >> pnumber;

//get input
for (i=0;i<=4; i++)
{
cout << "\nPlease enter your scores: ";
cin >> scores[i];
}

avg = (scores[1]+scores[2]+scores[3]+scores[4]+scores[5]) ;



cout << "The average score is:" << avg << endl;



return 0;
}


Ive tried finding the highest and lowest and have had success whatsoever!

Can someone tell me what to do? THANKS!

[vlad from moscow]

It is invalid loop

for (i=0;i<=4; i++)

because you are entering 5 values while your array has only 4 elements

le scores[4];

Also you forgot to enter the address.:)

[Chapin247]

Ok so now I have this:


#include <iostream>
#include <string>
using namespace std;

int main()
{

string name;
string pnumber;
string address;
double scores[5];
int i;
double avg;
int highest = 100, lowest= 0.0;

cout << "What is your name? ";
getline(cin, name);

cout << "What is your address? ";
getline(cin, address)


cout <<"What is your phone number? ";
cin >> pnumber;

//get input
for (i=0;i<5; i++)
{
cout << "\nPlease enter your scores: ";
cin >> scores[i];
}

avg = (scores[1]+scores[2]+scores[3]+scores[4]+scores[5]) ;



cout << "The average score is:" << avg << endl;



return 0;
}


but can you please tell me why my average is inaccurate and tell me how to get the highest and lowest test scores to appear on the output??

Thanks!

[vlad from moscow]

It is not an average

avg = (scores[1]+scores[2]+scores[3]+scores[4]+scores[5]) ;

As far as I know the average will be

avg = (scores[0]+scores[1]+scores[2]+scores[3]+scores[4]) / 5 ;

And I have not understood what is the problem with highest and lowest scores?

And what do mean the following declarations?

int highest = 100, lowest= 0.0;

[Chapin247]

Oh ok that seems to make sense! And what I was talking about is out of the 5 test scores entered my the user, the program will return the highest and lowest test scores.

Can you please tell me how to do that?

[vlad from moscow]

highest = lowest = scores[0];

for ( int i = 1; i < 5; i++ )
{
   if ( a[i] < lowest ) lowest = a[i];
   if ( highest < a[i] ) highest = a[i];
}

[Chapin247]

So I did what you said and my program is as follows:



#include <iostream>
#include <string>
using namespace std;

int main()
{
string name;
string pnumber;
double scores[5];
double avg = 0.0;
double highest = 0.0, lowest= 0.0;

cout << "What is your name? ";
getline(cin, name);

cout <<"What is your phone number? ";
cin >> pnumber;

//Get Input
for (int i = 1; i <= 5; i++)
{
cout << "Please enter score " << i << ": ";
cin >> scores[i];
avg += scores[i];

for ( int i = 1; i < 5; i++ )
{
if ( scores[i] < lowest ) lowest = scores[i];
if ( highest < scores[i] ) highest = scores[i];
}
}
avg /= 5;

cout << "The highest score is: " << highest << endl;
cout << "The lowest score is: " << lowest << endl;
cout << "The average score is: " << avg << endl;

return 0;
}


and when I enter the test scores it comes out like this:


What is your name? Bob
What is your phone number? 555-555-5555
Please enter score 1: 1
Please enter score 2: 2
Please enter score 3: 3
Please enter score 4: 4
Please enter score 5: 5
The highest score is: 1.07591e+43
The lowest score is: 0
The average score is: 3

what am I doing wrong?

[Chapin247]

Nevermind I solved the issue! I forgot to add the

int = i;

now my last question is how to get the average score without the highest and lowest scores

Please help