C语言_基础代码_01

#include<stdio.h>
#include<stdlib.h>
#define BUFFERSIZE 1024/*允许处理的最长行有1024个字符*/
/*编译环境vs2013*/
void main()
{
    int a, b, sum;         /*将输入的两个数分别存储在变量a和b中，sum=a+b*/
    char buffer[BUFFERSIZE];
    printf("***********************************
");
    printf("*  Welcome to use our counter     *
");
    printf("*  Input two integers in one line *
");
    printf("*  The sum will be printed        *
");
    printf("*  Input the char '#' to quit     *
");
    printf("***********************************
");
    /*从标准输入（stdin）读取输入的数据，存储在buffer中.
    如果读取的第一个字符是'#'则推出程序*/
    while ((fgets(buffer, BUFFERSIZE, stdin) != NULL) && (buffer[0] != '#'))
    {
        if (sscanf_s(buffer, "%d %d", &a, &b) != 2)              /*处理存储在buffer中的一行数据*/
        {
            printf("The input is skipped:%s", buffer);/*如果输入的数字不是两个则报错*/
            continue;                               /*继续读取下一组数据*/
        }
        sum = a + b;                                         /*计算a与b的和*/
        printf("The sum of %d and %d is %d
", a, b, sum);  /*输出计算结果*/
    }
    return;
}