[ÇóÖú]Ò»µÀ±È½Ï¼òµ¥µÄACMÌâÄ¿

¡Ì±ÌË®º®Ì¶

Problem Description

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

¡ùËæ·çÆ®µ´¡ù

int sum()
{
cout<<"Please input a series of integers(end with 0).\n";
int i,sum=0;
while(cin>>i,i!=0)
sum+=i;
return sum;
}

³ó½£¿Í

Õâ¸öÌâÄ¿int ¿ÉÄܲ»¹»µÄ

±ß×ß¡è±ß°®

#include<iostream.h>
void main()
{
int n,temp,sum;
cout<<"ÇëÊäÈëÒ»¸öÕûÊýn:";
cin>>n>>endl;
for(temp=n;temp<=n;temp++)
{
sum+=temp;
}
cout<<sum<<endl;
}

µ­µ­µÄÑ̲Ýζ

ÄÇÊý¾Ý´óСÄØ £¿

ÖÂÃü¤Îdu

¾ÍÊÇÒªÇóÊäÈ뼸¸öÊý¾Ý£¬Êä³öËûÃǵÄÏà¼ÓºÍ£¬µÚÒ»ÐбíʾÊäÈ뼸ÐÐÊý¾Ý

£Ø¼ÎÈš

Õâô¼òµ¥£¿ÎÒÊDz»ÊÇû¶Á¶®ÌâÄ¿°¡£¿