作业3（3）输入 15 个字符，统计其中英文字母、空格或回车、数字字符和其他字符的个数

#include<stdio.h>
int main(void)
{
int yinwen,shuzi,koge,other;
char ch;
int i;
yinwen=shuzi=koge=other=0;
printf("Enter 15 characters:");
for(i=1;i<=15;i++){
ch=getchar( );
if((ch>='a'&&ch<='z')||(ch>='A'&&ch<='Z'))
yinwen++;
else if(ch>='0'&&ch<='9')
shuzi++;
else if(ch>=' '&&ch<='\n')
koge++;
else
other++;
}
printf("yinwen=%d,shuzi=%d,koge=%d,other=%d\n",yinwen,shuzi,koge,other);

return 0;

}