#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void) {

  char word[100];

  printf("Digite a palavra: ");
  fgets(word, 100, stdin);

  word[strcspn(word, "\n")] = '\0';

  for (int i = strlen(word) - 1; i >= 0; i--) {
    printf("%c", word[i]);
  }
  printf("\n");

  return EXIT_SUCCESS;
}