iPhone: Problems with Formatted String (Objective C)

formatted, iphone, objective-c, string

Solution

- `%@`: Output the string form of an object (including `NSString`).

- `%f`: Output a floating point number (`float`)

- `%d`: Output an integral number (`int`)

- `%x`: Output hexadecimal form of a number

Your original `NSString:stringWithFormat:` had two issues:

- `@%` should be `%@` to output an NSString.

- You use `%f` instead of `%d` to output an int.

Problem

I need help. How come this does not work: ``` NSProcessInfo *process = [NSProcessInfo processInfo]; NSString *processName = [process processName]; int processId = [process processIdentifier]; NSString *processString = [NSString stringWithFormat:@"Process Name: @% Process ID: %f", processName, processId]; NSLog(processString); ``` But this does: ``` NSLog(@"Process Name: %@ Process ID: %d", [[NSProcessInfo processInfo] processName], [[NSProcessInfo processInfo] processIdentifier]); ```

Original source