[問題] 有誰會Ｃ程式語言 （急） 謝謝！！

[Vxprincessx (^^)]

我有很急的Ｃ程式問題　想問一下各位大大


因為要考試了


可是我不會寫　可以幫忙解答嗎


已經問過很多同學可是大家都不會

拜託了　謝謝


題目如下：

1.      [清除記憶體]Write a function "void bzero(char*p, int n)" to set the n
contiguous bytes of memory starting from the pointer p to '\0'.

2.      [設定記憶體]Write a function "void bset(char*p, int n, char x)" to set
n contiguous bytes of memory starting from the pointer p to the value of x.

3.      [反向字元搜尋]Write a function "int findlast(char *s, char c)" to
retur
the index position of the last occurrence of a specified char c within the
string s, and return -1 if not found, such as findlast("language",'a')
returns 5.

4.      [八進位字串轉整數]Write a function "int otoi(char h[])" to convert an
octal string h to an integer, such as otoi("377") returns 255.

5.      [十六進位字串轉整數]Write a function "int xtoi(char h[])" to convert a
hexadecimal string h to an integer, such as xtoi("3ff") returns 1023.

6.      [去兩邊空白]Write a function "void trim(char s[])" to remove the
rightm
and leftmost spaces of string s, such as trim("  ab c  ") gets "ab c".




希望有好心人幫幫我這可憐的學生　　

這科沒過就要延畢了

拜託各位大大幫幫忙


我會感激不盡　　謝謝

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