17112

int mystrlen(char* p)
{
    int i;
    char* abc = p;
    for ( i = 0;; i++)
    {
        if (abc[i] == '\0')
        {
            return i;
        }

    }
    printf("\n%d", i);
}

void foo()
{
#define BUF_SIZE 128
    void* buffer = malloc(128);
    char* p = buffer;
    char* buffer = (char*)malloc(BUF_SIZE);
    if (buffer)
    {
        memset(buffer, 0x00, BUF_SIZE);
        strcpy(buffer, "helloworld!");      
        strcat(buffer,"nihao!");
        //int len = strlen(buffer);
        //printf("sl:%s\n",buffer);
        //printf_hex(buffer, BUF_SIZE);
        //memset(buffer + 4, 0x00, BUF_SIZE - 4);
        //printf("s2:%s\n",buffer);

        char* p = buffer;
        mystrlen(p);
        printf("%d", mystrlen(p));
        free(buffer);
    }
#undef BUF_SIZE 
}
void main()
{
    foo();

    getchar();
}