Resizing the Arrays

What does this function do?

This function doubles the size of the titles[] and years[] arrays when they run out of space. At the start of the program, the arrays are small (capacity 2), but as the user keeps entering movies, we eventually run out of room. This function:

• Allocates new, larger arrays

• Copies all the old data into the new ones

• Deletes the old arrays

• Updates the original pointers to point to the new arrays

• Doubles the value of capacity

Why do we need this?

C++ arrays have a fixed size once they are created. If we want to add more data than the array can hold, we must create a new, bigger array and move everything over manually.

This is what resize() does.

Without this function, the program would crash or lose data once the user enters more than two movies.

Explaining the Parameters