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Error checking an array

Hibochi (2)
I'm writing a program which calculates the average rainfall for 12 months. I need to make sure no chars or negative numbers are inputted into my array but I'm not quite sure how to do that.

This is what i have so far. Any suggestions would be appreciated.

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void getRainfall(double rainfall[]) //parameter list
{
	for (int i = 0; i < 12; i++)
	{
		cout << "Enter rainfall: ";
		cin >> rainfall[i];

		if (rainfall[i] <= 0)
		{
			

		}


	}
}


Thanks in advance!
hamsterman (4538)
to loop until user inputs the right value write
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do cin >> rainfall[i];
while(rainfall[i] < 0 || //loop if value is lower than 0
    cin.rdstate() & failbit);//loop if non-integer value was entered

I'm not sure it's the right way to check if int was inputed...
Hibochi (2)
it didnt work, i dont quite know what you mean by failbit.
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