P51题13题

#include<stdio.h>
#include<stdlib.h>
int main()
{
int ch;
int number=0;
int n=0;
while((ch=getchar())!='*')
{
if((ch>='A'&&ch<='Z')||(ch>='a'&&ch<='z'))
    {
   n++;
}
else if(ch>='0'&&ch<='9')
{
number++;
}
}
printf("字母:%d\n",n);
printf("数字:%d\n",number);
return 0;

}