浙大版《C语言程序设计（第3版）》题目集 习题8-9 分类统计各类字符个数 (15分)

#include <stdio.h>
#define MAXS 15
void StringCount(char *s);
void ReadString(char *s); /* 由裁判实现，略去不表 */
int main()
{
    char s[MAXS];
    ReadString(s);
    StringCount(s);
    return 0;
}
void StringCount(char *s)
{
    int big, small, blank, digit, others;
    char *p;
    big = small = blank = digit = others = 0;
    for (p = s; *p; p++)
    {
        if (*p >= 'A' && *p <= 'Z')
            big++;
        else if (*p >= 'a' && *p <= 'z')
            small++;
        else if (*p == ' ')
            blank++;
        else if (*p >= '0' && *p <= '9')
            digit++;
        else
            others++;
    }
    printf("%d %d %d %d %d", big, small, blank, digit, others);
}