C++学习笔记 --- 指针1

#include <iostream>

// A character array.
char msg[] = "Now is the time\n";

////////////////////////////////////////
// The main() function.
////////////////////////////////////////
int main()
{
char* cp;    // A pointer to char.
int i;       // An integer subscript

// Pointer access, pointer notation.
for (cp = msg; *cp; cp++)
std::cout << *cp;

// Subscript access, subscript notation.
for (i = 0; msg[i]; i++)
std::cout << msg[i];

// Pointer access, subscript notation.
for (cp = msg; cp[0]; cp++)
std::cout << cp[0];

// Subscript access, pointer notation.
for (i = 0; *(msg+i); i++)
std::cout << *(msg+i);

// Pointer and subscript access, pointer notation.
for (i = 0, cp = msg; *(cp+i); i++)
std::cout << *(cp+i);

// Pointer and subscript access, subscript notation.
for (i = 0, cp = msg; cp[i]; i++)
std::cout << cp[i];

return 0;
}