C language learning notes, C Language Learning

C language learning notes, C Language Learning

I. pointer

The pointer is the address. The pointer variable is the variable used to store the address. The address of the pointer variable is stored in the pointer variable.

1. One-dimensional array

The one-dimensional array name represents the address of the first element of the array, so * a = a [0];

&: Obtains the address operator. & A is the address of variable

*: Pointer operator. * p indicates the object to which the pointer Variable p points.

1 a + I = & a [I]; 2 * (a + I) = a [I]; // The two are unconditionally equivalent.