I am new to C++ and I am trying to average a set number of grades given by the user. Stuck with a compiler errors that I can't find

Question

#include <iostream.h>

void main()
{
double average;
int GradestoAvg;
int sum = 0;

{
cout << "This program averages grades that the user provides. " << endl;
cout << "How many grades do you want to average?" << endl;
cin >> GradestoAvg;

cout << "Enter Grades:" << endl;
cin << sum;
}


while (GradestoAvg > 0)
average = sum / GradestoAvg;
cout << "The average of the grades is << average <<" endl;

Why am I getting a compiler error near the top? It tells me it is expecting a ; near the top where my double average and int GradestoAvg are located. Any thoughts?

The main problem is that you're writing a dialect of C++ that's been obsolete for nearly twenty years. I suggest throwing away whichever book you're learning from and getting a [modern one](http://stackoverflow.com/questions/388242). — Mike Seymour, Apr 28 '15 at 13:57
for future occasions, try putting out the error, you are having — Angel Angel, Apr 28 '15 at 14:09

score 0 · Answer 1 · answered Apr 28 '15 at 13:55

0

The correct include is <iostream> and you need to qualify cout and other std-scoped variables with std:: (std::cout, std::endl).

Also note the potential infinite loop (the while), as the condition doesn't appear to change.

answered Apr 28 '15 at 13:55

Luchian Grigore

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Also the OP needs to sum up the values given from `std::cin`. – πάντα ῥεῖ Apr 28 '15 at 13:59
Thanks Luchian I wasn't entirely finished with the code. I just wanted to do a test run first to see if everything was intact I'll be getting there though. – user3416645 Apr 28 '15 at 14:31

score 0 · Answer 2 · answered Apr 28 '15 at 14:02

0

other than as mentioned in other answer, check this line :

cin << sum;

is cin >> sum;

answered Apr 28 '15 at 14:02

Angel Angel

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score 0 · Accepted Answer · edited Apr 28 '15 at 14:53

0

first thing, you have some mistakes with the cin couts there... i think something like this would be better

#include <iostream>
using namespace std;

int main()
{
  double average;
  int GradestoAvg;
  int sum = 0;
  int tmp;
  cout << "This program averages grades that the user provides. " << endl;
  cout << "How many grades do you want to average?" << endl;
  cin >> GradestoAvg;
  while (GradestoAvg > 0)
  {
    cout << "Enter Grades:" << endl;
    cin >> tmp;
    sum+= tmp;
    GradestoAvg--;
  }

  average = sum / GradestoAvg;
  cout << "The average of the grades is" << average << endl;
  return 0;
}

edited Apr 28 '15 at 14:53

Bill

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answered Apr 28 '15 at 14:05

David Rubin

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what are you talking about? – David Rubin Apr 28 '15 at 14:13
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not angry, it was just that if he was doing some work or practice, you are the finished – Angel Angel Apr 28 '15 at 14:20
Thanks for your help David. I was just having trouble with the compiling of this program seeing as how this is an assignment I just needed to see what was going on there. The C++ compiler we are using might not allow for certain things but I'll check it out. – user3416645 Apr 28 '15 at 14:30
no problem David, @user3416645 if the this answer helped fix his mistake, or fix the error Consider upvote or acept, thank you, could also read this: -> http://stackoverflow.com/tour – Angel Angel Apr 28 '15 at 14:37

I am new to C++ and I am trying to average a set number of grades given by the user. Stuck with a compiler errors that I can't find

3 Answers3