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;

}