杭电acm答案无敌版.doc

.
.DOC资料.
选修课考试作业
2012素数判定 33
2014青年歌手大奖赛_评委会打分 342017字符串统计 40
2019数列有序! 41
2020绝对值排序 43
2033人见人爱A+B 46
2039三角形 48
2040亲和数 49
姓名：春杰
级：电商14
1001 Sum Problem
Problem Description
Hey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).
In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + ... + n.
 
Input
The input will consist of a series of integers n, one integer per line.
 
Output
For each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.
 
Sample Input
1
100
 
Sample Output
1
5050
 
Author
.
.DOC资料.
DOOM III
解答：
#include<>
main()
{
int n,i,sum;
sum=0;
while((scanf("%d",&n)!=-1))
{
sum=0;
for(i=0;i<=n;i++)
sum+=i;
printf("%d\n\n",sum);
}
}
.
.DOC资料.
1089 A+B for Input-Output Practice (I)
Problem Description
Your task is to Calculate a + b.
Too easy?! Of course! I specially designed the problem for acm beginners.
You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.
 
Input
The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
 
Output
For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.
 
Sample Input
1 5
10 20
 
Sample Output
6
30
 
Author
lcy
 
.
.DOC资料.
Recommend
JGShining
解答：
#include<>
main()
{
int a,b;
while(scanf("%d%d",&a,&b)!=EOF)
printf("%d\n",a+b);
}