Taking input from an array of integers in C++

Question

All, I'm pretty new to C++. My teacher gave us the assignment of creating a function that would do the following:

//addbig( ) -- This function is sent an array of integers and the length 
//of the array.  
//It returns the sum of all integers in the array that are larger than 1000.

Maybe because, English is my second language, but I don't really understand what he is asking here.

Also, when taking input from the user, I was using cin >> when the arrays would be made of characters. But I tried to use it to receive input from an array of integers and is not letting me do that. Do I have to do a conversion first?

If any of you could shed some light, it would be great.

Doesn't sound like you are taking input from the user. You just need to make a function that takes in two parameters: an array of integers, and the size of the array who returns the sum of all integers in the array larger than 1000. — hankd
– hankd, Commented Nov 14, 2013 at 22:06
If you are responsible for reading the integers from a file (or the keyboard) before passing them to the assigned function then just file >> x; where x is an int and not a char. The stream is properly overloaded — Duck
– Duck, Commented Nov 14, 2013 at 22:08

nykwil · Accepted Answer · 2013-11-14 22:09:01Z

1

I think you should start with the functions parameters. It says addBig has two parameters an array of integers and the length of the array.

int addBig(int arr[], int sze)
{
     int sum = 0;
     // do summation.
     return sum;
}

answered Nov 14, 2013 at 22:09

nykwil

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2 Comments

user1804599 Over a year ago

Note that the first parameter is not an array but actually a pointer. :)

nykwil Over a year ago

Yeah I generally prefer to use pointers for this sort of thing. The only time I would actually use this (instead of say a vector) is if I wanted the function to work with different data structures. Who still uses arrays? I edited anyways for simplicity.

Vlad from Moscow · Accepted Answer · 2013-11-14 22:16:41Z

0

As for the input of integers

const size_t N = 10;
int a[N];

std::cout << "Enter " << N << " integer values: ";
for ( size_t i = 0; i < N; i++ ) std::cin >> a[i];

As for the function then you should declare it as

int addbig( int a[], size_t n );

edited Nov 14, 2013 at 22:16

answered Nov 14, 2013 at 22:08

Vlad from Moscow

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