HDU___1000

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                                                              A + B Problem

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 658193    Accepted Submission(s): 205141

Problem Description
Calculate A + B.

Input
Each line will contain two integers A and B. Process to end of file.

Output
For each case, output A + B in one line.

Sample Input
1 1

Sample Output
2

Author
HDOJ

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分析：考查对数据输入输出的处理，多组数据用到循环，处理到文件末尾 C语言用scanf()函数返回到的值来判断（无输入返回0），判断其是否等于常量EOF（其值为0），C++用while(cin>>); C语言的输入输出比C++的耗时少

#include<bits/stdc++.h>using namespace std;int main(){ int a,b; while(~scanf("%d%d",&a,&b)) {  printf("%d\n",a+b); }}

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