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以 c 中减去字母
原标题:subtracting letters in c

I would like to know how to "subtract letters" in C:
I mean, I have 2 letters, a and c and i want to execute c - a = b which is 3-1=2.
How is it possible to obtain the same behaviour in C?
I can conversion Letters->Numbers but how to manage the limited lenght of the alphabet? Thank you.

最佳回答

您可以将字母作为数字处理,然后将字母 a 重新添加到正常状态

so so, so, so, so, so, so, so, so, so,

char c1 =  a ;
char c2 =  c ;
int diff = c2 - c1; // c  -  a  = 2
char ans = diff +  a  - 1; //add  a  and subtract 1 to normalize it

如果您想要数字差异, 请从我的答复中使用 diff (ans 会给你信件)。

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 a  -  b  

将产生 -1 (或前面的字符)

如果您想要用一个包处理负面, 您必须检查它

int diff = c2 - c1;
char ans;
diff > 0 ? ans = diff +  a  - 1 :  z  + diff + 1; 

这将提供:

  1. z for b - c
  2. y for b - d
问题回答

你在看这个吗?

char a1,a2,a3;
a3 = a1 - a2 +  a ;




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