自定义字符类型统计

解题思路:

注意事项:

参考代码:

#include <stdio.h>

#include <string.h>

void tongji(char a[1000],  int *letter, int *number, int *space, int *others)

{

    int l = 0;

    l = strlen(a);

    for (int i = 0; i < l; i++)

    {

        if ((a[i] >= 'A' && a[i] <= 'Z') || (a[i] >= 'a' && a[i] <= 'z'))

            (*letter)++;

        else if (a[i] >= '0' && a[i] <= '9')

            (*number)++;

        else if (a[i] == ' ')

            (*space)++;

        else

            (*others)++;

    }

}

int main()

{

    char a[1000];

    int letter = 0, number = 0, space = 0, others = 0;

    gets(a);

    tongji(a, &letter, &number, &space, &others);

    printf("%d %d %d %d", letter, number, space, others);

    return 0;

}