c primer plus第十一章编程题10（待简化）

#include 
void reverse(char* line)
{
	int index=0;
	char temp[20];
	char* swi;
	swi = line;
	while (*swi)
	{
		if (*swi == ' ')
		{
			swi++;
			continue;
		}
		else
		{
			temp[index] = *swi;
			swi++;
			index++;
		}
	}
	temp[index] = '';
	puts(temp);
	index = 0;
	while (*(temp + index) != '')
	{
		*(line+index) = *(temp + index);
		index++;
	}
	*(line + index) = '';
}

int main()
{
	char a[20];
	char* b;
	printf("please enter a line of characters:");
	b = gets(a);
	while (a[0] != ' ')
	{
		reverse(b);
		puts(b);
		printf("Next line?(blank to quit)");
		b = gets(a);
	}
	printf("bye");
}