Char array in a function

I need to enter a sentence and the program has to write the words backwards
using a function. Mean if i enter i'm bored i should get bored i'm
I've only managed to do this

Code:

 #include<stdio.h>
#include<string.h>
void Func21Mas(char *s, int n)
{
  char *sen=s;
  for (int i=n-1; i>=0; i--){
    while (*sen)
      printf("%c",*sen++);
      sen++;
    printf(" ");
  }
}
void main()
{
  int k=0;
  char sent[100], *ptrtok, *words[20];
  gets(sent);
  ptrtok=strtok(sent," ");
  while(ptrtok){
    words[k]=ptrtok;
    k++;
    ptrtok=strtok(NULL," ");
  }
  Func21Mas(*words,k);
  /*for (int i=k-1; i>=0; i--){
    while (*words[i])
      printf("%c",*words[i]++);
    printf(" ");
  }*/
}

Is this supposed to be C or C++?

It has to be in c++.

In that case, make use of the C++ standard library. For example, use the overloaded operator>> for std::istream and std::string to read into a std::vector<std::string>, then print starting from the last element.