#include<iostream>
#include<iomanip>
using namespace std;

int main(){
    char temp[30]={0};
    double distance=0.0;
    int lasttime=0;
    double oldspeed=0.0;
    double curspeed=0.0;
    while(cin.getline(temp, sizeof(temp), '\n')){
        char *space;
        int hh, mm, ss;
        for(int i=strlen(temp)-1;i>=0;i--)
            if(temp[i]!=' ')
                break;
            else
                temp[i]=0;
        if(space=strchr(temp, ' ')){
            *space=0;
            sscanf(temp, "%d:%d:%d", &hh, &mm, &ss);space++;
            temp[strlen(temp)]='\0';
//            cout<<space<<endl;
            if(sscanf(space, "%lf", &curspeed)==-1){
                curspeed=0.0;}
  //          cout<<"*"<<curspeed<<endl;
            distance = oldspeed*(hh*3600+mm*60+ss - lasttime)/3600;
            lasttime = hh*3600+mm*60+ss;
            oldspeed = curspeed;
//            cout<<lasttime<<" "<<oldspeed<<endl;
        }
        else{
            sscanf(temp, "%d:%d:%d", &hh, &mm, &ss);
            int nowdis=0;
            nowdis = (distance + oldspeed*(hh*3600+mm*60+ss - lasttime)/3600)*1000;
            if(nowdis%10>=5){
                nowdis /= 10; nowdis += 1;}
            else
                nowdis /= 10;
            cout.width(2);
            cout.fill('0');
            cout<<hh<<":";
            cout.width(2);
            cout.fill('0');
            cout<<mm<<":";
            cout.width(2);
            cout.fill('0');
            cout<<ss<<" ";
            cout.setf(ios::fixed);
            cout.setf(ios::showpoint);
            cout.precision(2);
            cout<<(double)nowdis/100<<" km"<<endl;
        }
    }
}

• Re:WAWAWA!!谁能告诉我哪错了? (1841) zyz 2007-04-30 21:59:25