HDOJ_1720_A+B Coming

题目：Many classmates said to me that A+B is must needs.
If you can’t AC this problem, you would invite me for night meal. ^_^

Input
Input may contain multiple test cases. Each case contains A and B in one line.
A, B are hexadecimal number.
Input terminates by EOF.

Output
Output A+B in decimal number in one line.

Sample Input

1 9
A B
a b

Sample Output

10
21
21

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要注意的点：

1.hexadecimal number 十六进制数，c语言中的按格式输入中提供了输入十六进制数的办法。

scanf("%x",&i)；//按十六进制数输入i；printf("%d",i);//按十进制输出结果；

2.Input terminates by EOF.当是文件结尾时结束输入。

EOF=END OF FILE;

可以通过while (scanf(“%x %x”,&a,&b)!=EOF) 实现
3. in decimal number .输出为十进制数字。

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代码如下：

#include <iostream>using namespace std;int main(){    int a,b;    while(scanf("%x %x",&a,&b)!=EOF){        printf("%d\n",a+b);    }    return 0;}