Thread: bubblesort problem

I have been writing a bubble sort function to sort an array of numbers and an array of names. I wrote the code the way I thought it was supposed to be but every time I run it, the last input from the array gets changed into a 0 and gets sorted to the front, and I can't figure out the problem. Here is the code:

Code:

int main()
{
	char x='z';
	string names[100]={};
	int numbers[100]={};
	int counter=0;
	message();
	while(x!='q')
	{
		x=getcommand();
		switch(x)
		{
			case'a':
			case'A':
				add(names, numbers, counter);
				break;
			case'i':
			case'I':
				displayi(names, numbers, counter);
				break;
			case'n':
			case'N':
				displayn(names, numbers, counter);
				break;
			case'q':
			case'Q':
				x='q';	
				break;
			default:
				cout << "Invalid Input" << endl;
		}
	}
	return 0;
}
void add(string names[], int numbers[], int& counter)
{
	counter++;
	cout << "Enter the name: ";
	cin >> names[counter];
	cout << "Enter the CWID: ";
	cin >> numbers[counter];
}

void displayi(string names[], int numbers[], int& counter)
{
	int i, j;
	for (i=0; i < counter; i++)
	{
		for (j=0; j<i; j++)
		{
			if(numbers[i]<numbers[j])
			{
				int temp= numbers[i];
				numbers[i]=numbers[j];
				numbers[j]=temp;
			}
		}
	}
	for(int f=0;f<counter;f++)
		cout<<numbers[f]<<endl;
}

Any suggestions would be great, thanks.
Also, once I fix this problem I have to write the other bubble sort for the names and I was confused about how, if the user selects to sort by number, to have the names sorted as well so they display next to the correct number. Thanks.