13, the array name
int a[10];
// array name is the first element of the array address
// array name is a constant, can not be modified
14, pointing to the first element of the array pointer
printf("%d,",*(a+i))
15, accessed through a pointer subtraction array elements
// only addition and subtraction
16, array of pointers
Pointer array, which is an array, each element pointer
Su set of pointer is pointer to the array
17, the value transfer
Modify function does not affect the argument
No matter what type of variable, the variable itself is passed as long as the value is passed
18, address transfer
Address variable transmission, if you want to change by the function argument must address transfer
19, the array parameter
1 // array parameter is not an array, a pointer variable ordinary
2 // parameter array: int a [100000], int a [], int * a to the compiler, there is no difference
// 3 compilers process as int *
// array of non-difference parameter array of parameter 4: the parameter is a pointer variable array, the array is non-parameter array
int i= 0；
// 64-bit system, sizeof (a), a pointer is a variable, the result is 8
// sizeof (a [0]) element 0, is of type int result 4
20, returns the address of a local variable