#include<stdio.h>
#include<stdlib.h>
#define BUFFERSIZE 1024  /*允許處理的最長行有1024個字符*/
int main()
{
	unsigned short a,b,sum;         /*將輸入的兩個數分別存儲在變量a和b中，sum=a+b*/
	char buffer[BUFFERSIZE];
	printf("***********************************\n");
	printf("*  Welcome to use our counter     *\n");
	printf("*  Input two integers in one line *\n");
	printf("*  The sum will be printed        *\n");
	printf("*  Input the char '#' to quit  s  *\n");
	printf("***********************************\n");
	/*從標準輸入（stdin）讀取輸入的數據，存儲在buffer中.
	如果讀取的第一個字符是'#'則推出程序*/
	while((fgets(buffer,BUFFERSIZE,stdin)!=NULL)&&(buffer[0]!='#'))
	{
		if(sscanf(buffer,"%d %d",&a,&b)!=2)            /*處理存儲在buffer中的一行數據*/
			fprintf(stderr,"The input is skipped:%s",buffer);
		sum=a+b;                                       /*計算a與b的和*/
		printf("The sum of %d and %d is %d\n",a,b,sum);/*輸出計算結果*/
	}
	return 0;
}