learningc/chapters/1/exercises/shared/functions/reverse.c

#include <string.h>
#include "../limits.h"

void reverse(char s[MAXLINE], char d[strlen(s)+1]) {
  int len = strlen(s);
  for (int i=--len; i >= 0; --i) {
    d[len-i] = s[i];
    d[len+1] = '\0';
  }
}