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;
}
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