C summary of knowledge points 1

1 Array syntax ：

An array type [] Array name ;

int[] a;

double[] b;

Define an array , The array must be assigned , To initialize

Access array is from subscript 0 Start .

Nonparametric functions ：

There are parametric functions ：

The method name is the same , The phenomenon of different parameters is called polymorphism

Don't use it after creating the object , Release this space , Free up space with destructors .

： Code rewriting can be applied to inheritance .

Two classes are involved , Base class write method , Override the virtual method of the parent class in the subclass

Same signature ： The method name is the same 、 Parameters are the same （ The number of parameters is the same , The corresponding data types are the same ）