给你一个字符串,让你统计其中的字母,数字,和非字母数字(包括空格和回车)的个数. 输入以文件结束符结尾.

// Q765245.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <stdio.h>
#include <string.h>

int main()
{
    char buff[1000];
    int letter = 0;
    int number = 0;
    int other = 0;
    while (true)
    {
        char * p = gets_s(buff, 1000);
        if (p == NULL) break;
        other++;
        for (int i = 0; i < strlen(buff); i++)
        {
            if (buff[i] >= 'A' && buff[i] <= 'Z')
                letter++;
            else if (buff[i] >= 'a' && buff[i] <= 'z')
                letter++;
            else if (buff[i] >= '0' && buff[i] <= '9')
                number++;
            else
                other++;
        }
    }
    printf("%d %d %d\n", number, letter, other);
}