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

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?

Code:

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#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;
}

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