Question

I am new here and just started learning about Objective C.
I am having problem in making a calculator with codes.
For example, i want to set some codes e.g. A=55, B=42, C=19…..to Z= 66
Then allow user to type in any letter in the textfield and calculate the final sum of value.

My question is how can i set these codes (A-Z) then my calculation method can run user entered letters?

        result.text = [[NSString alloc] initWithFormat:@"%i",????? ];

Many Thanks

Answer 1

The first thing that comes in my mind is to save those values in a int[] and to retrieve them when you need. Of course it can be annoying to store all the values, especially if they don’t have a mathematical order.
To get those values you may simply do something like

result.text = [[NSString alloc] initWithFormat:@"%i",codes[letter-'A']];

where codes is the int[] where you stored your values and letter is the chose letter