Question

When I make:

NSString x = @"test"

How do I edit it so that it becomes “testing”?

And when I put:

NSMutableString x = [[NSMutableString alloc] initWithString:@"test"];

There is an error that says:

Initializer element is not a compile-time constant.

Thanks

Answer 1

When declaring NSMutableString, you missed the asterisk:

NSMutableString *x = [[NSMutableString alloc] initWithString:@"test"];
// Here --------^

With a mutable string in hand, you can do

[x appendString:@"ing"];

to make x equal testing.

You do not have to go through a mutable string – this will also work:

NSString *testing = [NSString stringWithFormat:@"%@ing", test];