写出运行结果:
{// test1
char str[] = "world"; cout ＜＜ sizeof(str) ＜＜ ": ";
char *p = str; cout ＜＜ sizeof(p) ＜＜ ": ";
char i = 10; cout ＜＜ sizeof(i) ＜＜ ": ";
void *p = malloc(10); cout ＜＜ sizeof(p) ＜＜
endl;
}