How do we use structs?

Question

The main problem I\'m having is having so many parameters, which I just want to get rid of, and yes I do not understand the logic of structs. However, it is becoming a bit more

Answer 1

typedef struct _foo
{
    int x1, x2, x3,..., x20;
} foo;

int add(const foo *pBar)
{
    return pBar->x1 + pBar->x2 + pBar->x3 + ... + pBar->x20;
}

int main()
{
    // declare and initialize the struct
    foo bar = { 1, 2, 3, ..., 20 };

    // an alternative way of initializing the struct:
    bar.x1 = 1;
    bar.x2 = 2;
    bar.x3 = 3;
     :
    bar.x20 = 20;

    int total = add(&bar);
}