Deleting a number digit by digit on a calculator screen

ios, iphone, xcode, xcode4

Solution

Here you go,

NSString *myString = [[NSNumber numberWithFloat:result] stringValue];
myString = [myString substringToIndex:[myString length]-1];
calculatorScreen.text= myString;

Problem

I want to delete a number digit by digit on the calculator screen but am only being able to delete the full number . Is there any method ? ``` -(IBAction)cancelInput:(float)result1{ NSString *myString = [[NSNumber numberWithFloat:result] stringValue]; int str=[myString length]-1; NSString *newstring = [[NSNumber numberWithInt:str] stringValue]; calculatorScreen.text= [NSString stringWithFormat:newstring]; //NSLog(@"%d ",str); } ```

Original source