1001随记

1001 求1~N的和

Problem : 1001 ( Sum Problem ) Judge Status : Accepted
RunId : 21512142 Language : C Author : jim0912
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta

#include <stdio.h>
int main ()
{
    int n,i,sum=0;
    while(scanf("%d",&n)!=EOF){
        for(i=1;i<=n;){
            sum=sum+i;
            i++;
        }
        printf("%d\n\n",sum);
        sum=0;
    }    
}

Problem : 1001 ( Sum Problem ) Judge Status : Presentation Error
RunId : 21511263 Language : C Author : jim0912
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta

#include <stdio.h>
int main ()
{
    int n,i,sum=0;
    while(scanf("%d",&n)!=EOF){
        for(i=1;i<=n;){
            sum=sum+i;
            i++;
        }
        printf("%d\n",sum);//没按要求 followed by a blank line 要再加\n
        sum=0;
    }    
}

Problem : 1001 ( Sum Problem ) Judge Status : Wrong Answer
RunId : 21511178 Language : C Author : jim0912
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta

#include <stdio.h>
int main ()
{
    int n,i,sum=0;
    while(scanf("%d",&n)!=EOF){
        for(i=1;i<=n;){
            sum=sum+i;
            i++;
        }
        printf("%d\n",sum);
    }    //没有清空总和sum变量
}

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