为什么是runtime error？
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郁闷 高手看了回复下哈
#include <iostream>
#include <vector>
#include <string>
#include <math.h>
#include <iomanip>
#include <stdlib.h>
#include <algorithm>
using namespace std;

int pround(float f)
{
    float eps=0.49;
    int i=(int)f;
    if((f-(float)i)<eps)
        return i;
    else 
        return i+1;
}

int main()
{
    float sumall=0,fat=0;
    int i=0,percent=0;float sum=0;
    char input[1000][1000];bool end=false;
    while (1)
    {
        int temp,len;
        scanf("%s",input[i]);
        if (strcmp(input[i],"-")==0&&end==true)
             break;
        end=false;
        if (strcmp(input[i],"-")==0)
        {
            float per=fat*100/sumall;
            printf("%d",pround(per));
            printf("%%\n");
            sumall=0;fat=0;
            end=true;
            continue;
        }
        len=strlen(input[i]);
        sscanf(input[i],"%d",&temp);        
        if (input[i][len-1]=='c')
        {
            sum+=temp;
            if (i%5==0)
            {
               fat+=temp;
            }
        }
        else if (input[i][len-1]=='g')
        {
            if (i%5==0)
            {
                sum+=temp*9;
                fat+=temp*9;
            }
            else if (i%5==4)
            {
                sum+=temp*7;
            }
            else
            {
                sum+=temp*4;
            }
        }
        else if (input[i][len-1]=='%')
        {
            if (temp>100)
               break;
            percent+=temp;
        }
        if (i%5==4)
        {
            if (percent!=0)
            {
                sum=sum*100/(float)(100-percent);
                len=strlen(input[i-4]);
                if(input[i-4][len-1]=='%')
                {
                    sscanf(input[i-4],"%d",&temp);
                    fat+=temp*sum/100.0;
                }
            }
            sumall+=sum;
            sum=0;percent=0;
        }
        i++;
    }
}