Is there a function equivalent that can take in statements as arguments?

Question

I have the following section of code that I need to use about 5 times throughout the whole program, but with different lines of code in place of the comment.

while (loop_day < (day+1)) {
    while (loop_size < (size+1)) {

        //new lines here

        size = size + 1;
    }
    loop_day = loop_day + 1;
}

I could copy and paste this multiple times, but I really would rather not, for aesthetic reasons. I tried searching for "functions that could take in statements as arguments", but found nothing appropriate.

Edit: I want to "embed" various statements into the code.

An example:

while (loop_day < (day+1)) {
    while (loop_size < (size+1)) {

        // code that stores various values into an array

        size = size + 1;
    }
    loop_day = loop_day + 1;
}


while (loop_day < (day+1)) {
    while (loop_size < (size+1)) {

        // code that reads values stored in that array

        size = size + 1;
    }
    loop_day = loop_day + 1;
}

But I want something like this:

custom_loop {
// code that stores various values into an array
}

custom_loop {
// code that reads values stored in that array
}

Answer 1

You can think of callback functions. For example,

typedef void (*t_func)(int, int);

void doLoopOverDaysAndSize(t_func callback)
{
    while (loop_day < (day+1)) {
        while (loop_size < (size+1)) {
            callback(loop_day, loop_size)
            size = size + 1;
        }
        loop_day = loop_day + 1;
    }
 }

Then you can pass some function like this

void myDaySizeHandler(int day, int size)
{
    // do something
}