Two-dimensional pointer usage and two-dimensional pointer usage

Two-dimensional pointer usage and two-dimensional pointer usage

# Include <iostream>
Using namespace std;
Int main ()

{
Char * str [] = {"Welcome", "to", "Fortemedia", "Nanjing"}; // each uses ABCD to represent four elements;
Char ** p = str + 1; // p-> B;
Str [0] = (* p ++) + 2; // p-> C, str [0]-> elements after D, the content is blank;
Str [1] = * (p + 1); // p-> C, str [1]-> D;
Str [2] = p [1] + 3; // p [1]-> D, p [1] + 3 indicates that the string points to the 4th elements, that is, j;
Str [3] = p [0] + (str [2]-str [1]); // str [2]-str [1] = 3, p [0] points to the address of j, that is, g;

Cout <str [0] <endl;
Cout <str [1] <endl;
Cout <str [2] <endl;
Cout <str [3] <endl;

Return 0;
}

Result:

Null

Nanjing

Jing

G