Type conversion (item in char array, to a double)

[hporto]

Hello

I'm actually writing an assignment in C for school. I am a VBA programmer so bare with me.

I have been trying to assign an item (numerical value) in a character array to a variable (with the data type of double).

For example, I use a scanf() to get the input "hahidi9999" or to capture things like "9999". If it is is numeric, such as 9999. I want to take the value 9999 which is stored in a character array test[0], assign it to another variable usDollars (a double), so I can then perform a mathematical calculation.

In VB/VBA this is very easy to do with conversion functions. However, I am not as familiar with C and am having trouble finding such functions.

I have attached a sample I've been working with (.c extension). It is driving me crazy....the compiler we are working with is a free one called Miracle C.

Any help would be great.
Thanks
Heather