My assignments requires me to display a starting time (hh:mm:ss) of user's input and travelling distance. The taxi is going in 90km/h. So ideally, I would want the program to display the time (15mins interval), from starting time to end time but in mm:ss format.

My approach is that I convert the starting time and end time to seconds, and I used a for loop. My interval would be i 900 (15mins in seconds). However, my for loop keeps running and never ends. Anyone can help me out ?

enter image description here <--- Expected output

My current code

    int hour, min, sec, minhour, newmin, timesec, endtime; //ignore irrelevant variables
    float distance, remdis, remdisb, firstfare, secondfare, fare;

    printf("Input your starting travelling time in 24hrs clock (hh mm ss): ");
    scanf("%d %d %d", &hour, &min, &sec);
    printf("Input your total travelling distance (km): ");
    scanf("%f", &distance);
    minhour = hour * 60;
    newmin = min   minhour;
    printf("Your starting time is d:d:d or d:d (mm:ss)\n", hour, min, sec, newmin, sec);
    printf("Your total travelling distance is %.1fkm or %.0fm\n", distance, distance*1000);

    timesec = hour*3600   min*60   sec;
    endtime = timesec   ((distance/90)*3600);

    printf("Starting time | Fare(%.1fkm)", distance);

    for (int i=timesec; i<=endtime; i 900)
    {
        min = i/60;
        sec = i - min;
        printf("%d:%d   |  $XX.yy\n", min, sec);
    }

CodePudding user response：

I removed this answer. Please accept other answer.

CodePudding user response：

Try this out:

    int hour, min, sec, minhour, newmin, timesec, endtime; //ignore irrelevant variables
    float distance, remdis, remdisb, firstfare, secondfare, fare;

    printf("Input your starting travelling time in 24hrs clock (hh mm ss): ");
    scanf("%d %d %d", &hour, &min, &sec);
    printf("Input your total travelling distance (km): ");
    scanf("%f", &distance);
    minhour = hour * 60;
    newmin = min   minhour;
    printf("Your starting time is d:d:d or d:d (mm:ss)\n", hour, min, sec, newmin, sec);
    printf("Your total travelling distance is %.1fkm or %.0fm\n", distance, distance*1000);

    endtime = newmin   ((distance*60)/90);

    printf("Starting time | Fare(%.1fkm)\n", distance);

    for (int i=newmin; i<=endtime; i =15)
    {
        hour = i/60;
        min = i % 60;
        printf("d:d   |  $XX.yy\n", hour, min);
    }

CodePudding user response：

However, my for loop keeps running and never ends

     for (int i=timesec; i<=endtime; i 900)
                                     ~~~~~~

Use i =900, not i 900 here.