Function returning an array in ObjC for iPhone

Hello I am trying to make this function to return an array! What is going wrong here?

-(char[10])print01:(int)int11{ //error: declared as method returning开发者_开发技巧 an array
    char arrayT[10];

    for(int i=0;i<8;i++)
    {
        if ((int1-n1)>=0){
            arrayT[i]='1';
            int1-=n1;
        }
        else 
            arrayT[i]= '0';
        n1=n1/2;
    }

    return arrayT[]; // incompatible types in return
}

and I want to call it like that:

char array1[10] = [self print01:(int)int1]; //error: invalid initializer

any suggestions please?

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You can't return an array in C or in Objective-C. The best you can hope for is to return a pointer to an array, but if you're going to do that, make sure you don't return a pointer to an array on the stack (like yours is).

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The best approach is using an NSArray (of objects of course, I'm assuming the above code is simplified sample, but you can always use an NSNumber). Alternatively, you could return a pointer to an array, which is common in C as C (and objective c by extension) cannot return an array. Unfortunately, this would require allocating memory for the array and using manual memory management, (malloc/free) which depending on the lifecycle of the array, can be anywhere from a nuisance to awful. My recommendation is taking a char *dest parameter, and inserting chars into the array as dest[i]