1012.字符串分类统计

解题思路:

注意事项:

参考代码:

#include <stdio.h>

int main()

{

char ch;

int letter,number,blank,other;

letter=number=blank=other=0;

while((ch=getchar())!='\n')

{

if(ch>='A'&&ch<='Z'||ch>='a'&&ch<='z')

letter++;

else if(ch>='0'&&ch<='9')

number++;

else if(ch==32)

blank++;

else 

other++;

}

printf("%d %d %d %d\n",letter,number,blank,other);

return 0;

}