Implementing a C string reverser

C string reverser

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

void reverseString (char **str)
{
	char *strCopy = *str;

	int	size = strlen(strCopy) - 1;

	char *aux = strdup(strCopy);

	for (int i = size ; i >= 0; --i)
	{
		aux[size - i] = strCopy[i];		
	}

	*str = aux;
	printf("String value reversed: %s\n", aux);
}

int main(int argc, char const *argv[])
{
	
	char *strToReverse = "hola";

	printf("Value previous to reverse %s\n", strToReverse);

	reverseString(&strToReverse);

	printf("Value after the reverse %s\n", strToReverse);

	return 0;
}