#include <stdio.h>

char strA[80] = "A string to be used for demonstration purposes";
char strB[80];

int main(void)
{
  char *pA;     /* a pointer to type character */
  char *pB;     /* another pointer to type character */
  puts(strA);   /* show string A */
  pA = strA;    /* point pA at string A */
  puts(pA);     /* show what pA is pointing to */
  pB = strB;    /* point pB at string B */
  putchar('\n');       /* move down one line on the screen */
  while(*pA != '\0')   /* line A (see text) */
  {
    *pB++ = *pA++;     /* line B (see text) */
  }
  *pB = '\0';          /* line C (see text) */
  puts(strB);          /* show strB on screen */
  return 0;
}