*RESOLVED* It prints the null char too. Why?

[estudiantin]

PLEASE IGNORE. SORRY! FIGURED IT OUT! FEELING LIKE AN IDIOT.

Just practicing. My StrReverse works like a charm but the only complaint is that it prints the null char as well on the screen. Why?

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

char* StrReverse(char*);


int main(void)
{
	char* str;
	char* ptr;
	char cArray[] = "Hello, how are you?";

	str=cArray;
	ptr=0;

	ptr = StrReverse(str);
	if (ptr) printf("%s\n",ptr);
}


char* StrReverse(char* str)
{
	char* temp;
	int i =0,j =0;

	i=strlen(str);

	temp = (char*)malloc((i+1)* sizeof(char));
	
	if (temp)
	{
		for(j=0;j<i;j++)
			*(temp+j) = *(str+i-j-1);
		
		*(temp+j)='\0';
	}
	return temp;
}