/* PBXA64 handbook-style C text example: url_percent_encoding.
 * measure percent-encoding expansion for URL-safe transport. This source deliberately keeps every transformation visible
 * instead of hiding it behind library calls, making it useful for tracing.
 */
int main(void) {
    char s[] = "a b/c"; int i = 0, size = 0; for (i = 0; s[i] != 0; ++i) { int safe = (s[i] >= 'a' && s[i] <= 'z') || s[i] == '-'; size += safe ? 1 : 3; } return size == 9 ? 0 : 1;
}

/* Discussion: inspect the loop bounds, byte classification, and final return
 * value. The bounded-C frontend currently records CIR0200 for all C source;
 * this example remains a real handbook program for the public C surface once
 * that frontend gate is restored. */
