[C/C++] ACM - 628 - Passwords

1st is a Russian who solved 1978 problems,

3rd is a Japanese who solved 1790 problems,

21nd is  a Taiwanese who solved 1278 problems,

1389th is me who solved 170 problems,

They are far far far  away from me.......

這題並不會很難, 但是用到 pow() 函式的時候卻發現了有趣的問題.

情況一:

pow(10, 2) == 100    <= TRUE

pow(10, 3) == 1000  <= TRUE

pow(10, 4) == 10000 <= TRUE

情況二:

n = 2;

pow(10, n) == 100     <= TRUE

n = 3;

pow(10, n) == 1000   <= FALSE

n = 4;

pow(10, n) == 10000 <= TRUE

不知道為什麼會這樣哩  : P

去問問數值分析老師好了, 哈哈.