关于#c语言#的问题：

Question

求各位专家帮忙看一下为什么出bug了
问题：输入一行字符，分别统计出其中的英文字母，空格，数字，和其他字符的个数。
代码如下

```c
#include<stdio.h>
int main()
{
    char c;
    int letters = 0, space = 0, digit = 0, other = 0;
    printf("请输入一行字符：\n");
    scanf_s("%c",& c);
    while (c = getchar() != '\n')
    {
        if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')
            letters++;
        else if (c == ' ')
            space++;
        else if (c >= '0' && c <= '9')
            digit++;
        else
            other++;
    }
    printf("字母数：%d\n空格数：%d\n数字数：%d\n其他字符数：%d\n", letters, space, digit, other);
    return 0;
    }

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/75557663177612.png "#left")

Answer 1

#include<stdio.h>
int main()
{
    char c;
    int letters = 0, space = 0, digit = 0, other = 0;
    printf("请输入一行字符：\n");
    while ((c = getchar()) && c!= '\n')
    {
        if ((c >= 'a' && c <= 'z' )|| (c >= 'A' && c <= 'Z'))
            letters++;
        else if (c == ' ')
            space++;
        else if (c >= '0' && c <= '9')
            digit++;
        else
            other++;
    }
    printf("字母数：%d\n空格数：%d\n数字数：%d\n其他字符数：%d\n", letters, space, digit, other);
    return 0;
    }