hdu-1001Sum Problem
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Sum Problem
Time Limit: 1000/500 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 469658 Accepted Submission(s): 118388
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.
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
水题一道,题意就是计算1~n的和,唯一需要注意的是格式问题,每两个输出数据之间要多上一个换行
贴上代码:
# include <stdio.h> int main () { int sum,n; while(scanf("%d",&n)!=EOF) { sum=0; for(int i=1;i<=n;i++) { sum+=i; } printf("%d\n\n",sum); } }
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