C语言 自定义函数之字符类型统计&

解题思路:

注意事项:

参考代码:

#include<stdio.h>

#include<string.h>

#define Long 40

int main()

{

            void scanf_str(char* a, int size, int* letter, int* num, int* space, int* other);

            char a[Long]="";

            int letter = 0, num = 0, space = 0, other = 0,size;

            gets(a);

            size = strlen(a);

            scanf_str(a, size,&letter, &num, &space, &other);

            printf("%d %d %d %d", letter, num, space, other);

            return 0;

}

void scanf_str(char* a, int size, int* letter,int* num,int* space, int* other)

{

    int i;

    for (i = 0; i < size; i++)

    {

                if ((*(a + i) >= 'A' && *(a + i) <= 'Z') || (*(a + i) >= 'a' && *(a + i) <= 'z'))

                    (*letter)++;

                else if (*(a + i) >= '0' && *(a + i) <= '9')

                    (*num)++;

                else if (*(a + i) == ' ')

                    (*space)++;

                else

                    (*other)++;

    }    

}