c++中ctype常用函数总结(isprint isblank..)

1 判断是否是二十六得字母中其中之一

　　　isalpha();

 1 #include <stdio.h>
 2 #include <ctype.h>
 3 #include <iostream>
 4 using namespace std;
 5 //是否是二十六个字母
 6 int main()
 7 {
 8     int i = 0;
 9     char str[] = "C++";
10     while (str[i])
11     {
12         if (isalpha(str[i])) printf("character %c is alphabetic\n", str[i]);
13         else printf("character %c is not alphabetic\n", str[i]);
14         i++;
15     }
16     std::cin.get();
17     return 0;
18 }

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