VS2010运行下为什么结果不对呢，求大神指点。输入字母和数字，都是other++


#include <stdio.h>
void main()
{
    char c;
    int letter=0,digit=0,space=0, other=0;
    printf("请输入一串字符");
    while ((c=getchar()!='\n'))
    {
        if(c>='A'&&c<='Z'||c>='a'&&c<='z')
            letter++;
        else if(c>='0'&&c<='9')
            digit++;
        else if(c==' ')
            space++;
        else
            other++;
    }
        printf("letter=%d,digit=%d,space=%d,other=%d",letter,digit,space,other);
}

试试加对括号：if(（c>='A'&&c<='Z'）||（c>='a'&&c<='z')）

有点高深...........

#include <stdio.h>
void main()
{
    char c;
    int letter=0,digit=0,space=0, other=0;
    printf("请输入一串字符");
    while (((c=getchar())!='\n'))
    {
        if(c>='A'&&c<='Z'||c>='a'&&c<='z')
            letter++;
        else if(c>='0'&&c<='9')
            digit++;
        else if(c==' ')
            space++;
        else
            other++;
    }
        printf("letter=%d,digit=%d,space=%d,other=%d",letter,digit,space,other);
}

c=getchar（）两边再加一对括号。。。。。。。。。也可以改成如下
#include <stdio.h>
int main()
{
     char c;
     int letter=0,digit=0,space=0, other=0;
     printf("请输入一串字符");
     while ((scanf("%c",&c)!=EOF))  //getchar换成scanf，，，，EOF是ctrl+z
     {
         if((c>='A'&&c<='Z')||(c>='a'&&c<='z'))
             letter++;
         else if(c>='0'&&c<='9')
             digit++;
         else if(c==' ')
             space++;
         else
             other++;
     }
         printf("letter=%d,digit=%d,space=%d,other=%d",letter,digit,space,other-1); //other-1是因为按ctrl+z时出现一个符号，所以减去
         getchar();
         getchar();
}

！！！！！

你的有点深刻，看了你们的帖子我找到错误了，while那句括号加的不对，编译发现不了的，，，谢谢大家的热心。