knr/1.10.c

#include <stdio.h>
/** escapes the input */
int main()
{
  char c=(char)1;
  while( c != EOF )
  {
    c = getchar();
    if (c == '\b')
	 printf("\\b");
    else if (c == '\\')
	 printf("\\\\");
    else if (c == '\t')
	 printf("\\t");
    else if (c == EOF);
    else
	 putchar(c);
   }
  return (0);
}