pointers and passing variable values from one function to another. how to pass variable values using pointers

Question

I need to have the bowl functions pass b1 and b2 into turntotal to add the two together in a different function. Here is the code, what am I doing wrong?

void bowl(){
    int b1=rand()%11;
    int b2=rand()%(11-(b1));
    int turntotal(&b1,&b2);
}

int turntotal(int *b1, int *b2){
    int bowltotal;
    bowltotal=((b1)+(b2));
    return(bowltotal);
}

There is a good list of books [here](http://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list), and it looks like you need one. — molbdnilo, Mar 03 '17 at 16:45

score 0 · Answer 1 · edited May 23 '17 at 11:53

You need to dereference a pointer to get value from the address it points to so you would write:

int turntotal(int *b1, int *b2) {
     return (*b1) + (*b2);
}

However your function doesn't modify any of its parameters so you can simply write:

int turntotal(int b1, int b2) {
     return b1 + b2;
}

Also line:

int turntotal(&b1,&b2);

doesn't make sense. You probably want to assign value returned from that function to a new variable so you can write:

int sum = turntotal(&b1,&b2);

or

int sum = turntotal(b1,b2);

if you don't use pointers where you don't have to.

As suggested in the comments - this is some basic stuff and you should consider changing your learning resources to one of the good books.

pointers and passing variable values from one function to another. how to pass variable values using pointers

1 Answers1