ascme.c - convert stdin to printable string with C/bash-style escape sequences

ascme.c

#include <stdio.h>

#define IN(a, z) (c >= (a) && c <= (z))

int main() {
  int count=0;
  int c;
  while (!feof(stdin)) {
    c = getc(stdin);
    // EOF?
    if (!IN(0, 255)) break;
    // Backslash
    if (c == '\\')
      printf("\\\\");    
    // Printable char
    else if (IN(32, 126))
      printf("%c", c);
    // Before printable range (including CR/LF/Tab)
    else if (IN(0, 31))
      printf("%c", c);
    // Anything else (including UTF-8)
    else
      printf("\\x%02x", c);
    count++;
  }
}