1001. A+B Format (20)——C语言

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本文介绍了一个简单的C语言程序，该程序接收两个整数作为输入，并以标准格式输出它们的和，即千位分隔符以逗号表示。文章通过示例说明了如何处理不同范围内的整数。

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Calculate a + b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less than four digits).

Input

Each input file contains one test case. Each case contains a pair of integers a and b where -1000000 <= a, b <= 1000000. The numbers are separated by a space.

Output

For each test case, you should output the sum of a and b in one line. The sum must be written in the standard format.

Sample Input

-1000000 9

Sample Output

-999,991

#include<stdio.h>  
int main()  
{  
  int num1,num2;  
  int sum;  
  scanf("%d%d",&num1,&num2);
    sum = num1+num2;  
    if(sum < 0)
    {  
    printf("-");  
    sum = -sum;  
    }  
    if(sum>=1000000)
    {  
        printf("%d,%03d,%03d\n",sum/1000000, (sum/1000)%1000, sum%1000);  
    }  
    else if(sum >= 1000)
    {  
        printf("%d,%03d\n",sum/1000,sum%1000);  
    }
    else
    {  
        printf("%d\n", sum);  
    }  
  return 0;  
}