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Re: 請教一下isdigit的用法
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高級會員
 
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我找到原因了
原來是它check的是字元 所以不能用2或5 要用'2'或'5'就可以了 
發表於: 2005/10/7 12:03
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請教一下isdigit的用法
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高級會員
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請教一下哦
我在程式碼裡加入了 #include <p18f4550.h> #include <delays.h> #include <ctype.h> void main(void) { unsigned char a; unsigned char b; a = 5; b = isdigit(a); if (b) a = 'k'; else a = 2; 可是回傳的b都是永遠是0 為什麼呢 我是不是用錯了 
發表於: 2005/10/7 11:49
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