Pointing issue.

[seriphim]

I'm just getting into pointers and I'm having trouble understanding what the hell is going wrong in my program. I'm trying to allow the user to enter an integer so that I can dynamically allocate memory for the array using a pointer. I can't seem to get it to work and it's driving me a little crazy. Thanks for your help!

void getInput(long int *, int);

// Main function
int main()
{

// Initialize the array
	long int *array;

	int arraySize=0;


// Welcomes the user to the program
	cout << "Welcome" << endl;
	cout << "How many integers would you like to add to the array" << endl;
	while (arraySize==0){
		cout << "You may not determine that you want 0 integers added to the array" << endl;
		cin >> arraySize;
	}
	cin.clear();
	cin.ignore();
	array = new long int [arraySize];

// Enters the getInput function
	getInput(&array, arraySize);

void getInput(long int *userArray, int arraySize)
{

// Initializes an integer to store the input
	long int testValue = 0;

// For loop from 0 to 9 increasing by 1
	for (int count = 0; count < arraySize; count++)
	{

// Prompts the user for their input
		cout << "Enter an integer number between -2,147,483,648 and 2,147,483,648" << endl;

// Test to make sure that the input is valid
		if (!(cin >> testValue))
		{
// If it fails
// Clears the Keyboard buffer
			cin.clear();
			cin.ignore(1000,'\n');

// Tell the user the problem
			cout << "That is not an integer" << endl;

// Decrease the count by 1 for overwriting
			--count;
		}

// If it passes
		else
		{

// The array at the index depending upon the for loop
// gains the value of the variable that stored the users
// input
			*(userArray+count)=testValue;
		}
	}
}

[keskiverto]

What is the exact error? (Your code doesn't seem to be complete.)


Your "array" is a pointer. The getInput takes a pointer. However, on line 25 you give the address of a pointer (same as giving a pointer to pointer).

[seriphim]

I fixed the problem.

// Enters the getInput function
	getInput(&array, arraySize);

Should have been.....

// Enters the getInput function
	getInput(array, arraySize);