1012: C语言程序设计教程（第三版）课后习题6.2

 1 #include "stdio.h"
 2 
 3 int main(int argc, char const *argv[])
 4 {
 5     char s[81];
 6     int i, char_count = 0, num_count = 0, space_count = 0, other_count = 0;
 7     // scanf("%s", s);
 8     gets(s);
 9 
10     for(i = 0; s[i] != ‘\0‘; i++)
11     {
12         if(s[i] >= ‘A‘ && s[i] <= ‘Z‘ || s[i] >= ‘a‘ && s[i] <= ‘z‘)
13             char_count ++;
14         else if(s[i] >= ‘0‘ && s[i] <= ‘9‘)
15             num_count ++;
16         else if(s[i] == ‘ ‘)
17             space_count ++;
18         else
19             other_count ++;
20     }
21 
22     printf("%d %d %d %d\n", char_count, num_count, space_count, other_count);
23     return 0;
24 }