#include <stdio.h>char * gets(char *s) {  char c;  unsigned int count=0;    while (1) {    c=getchar();    switch(c) {    case '\b': // backspace      if (count) {	putchar ('\b');	putchar (' ');	putchar ('\b');	s--;	count--;      }      break;    case '\n':    case '\r': // CR or LF      putchar('\r');      putchar('\n');      *s=0;      return s;    default:      *s++=c;      count++;      putchar(c);      break;    }  }}