PAT Basic 1033. 旧键盘打字 (20) (C语言实现) | PAT Solution in C

[xlucn]

https://oliverlew.github.io/PAT/Basic/1033.html

题目

[Lemonbillion]

#include<stdio.h>
int main(void)
{
static char bk[100004],c;
static int h;
static char sk[100005];
while((c = getchar()) != '\n')
{
bk[h++] = c;
}
scanf("%s",sk);
static int i,j,count,upper;
for(j=0;bk[j] != '\0';j++)
{

		if (bk[j]  == ',' || bk[j]  == '.' || bk[j]  == '-' || bk[j]  == '+')
		{
			upper = 1;
			
		}
	}
for(i = 0;sk[i] != '\0';i++)
{
	if (upper)
	{
		if  (sk[i] - 'A' >= 0 && sk[i] - 'Z' <= 0)
		{
			continue;
		 } 
	}
	for(j=0;bk[j] != '\0';j++)
	{
		if (bk[j] == sk[i] || bk[j] - ('A' -'a') == sk[i] || bk[j] + ('A' -'a') == sk[i] ) 
		{
			break;
		}
	}
	if (bk[j] == '\0')
	{
		putchar(sk[i]);
		count++;
	}
}
if (!count)
{
	puts("");
}
return 0;

}

测试点4过不了,求助一下