Question

debug the program in java

/**
This program demonstrates an array of String objects.
It should print out the months and each day of the month.
It should print out the month name and days for the month with the least days
It should print out the average number of days in each month
Here is what it should print when executed:
January has 31 days.
February has 28 days.
March has 31 days.
April has 30 days.
May has 31 days.
June has 30 days.
July has 31 days.
August has 31 days.
September has 30 days.
October has 31 days.
November has 30 days.
December has 31 days.
Lowest Month is February with 28 days
Average days in each month is 30.42 days
*/

public class MonthDays
{
public static void main(String[] args)
{
String[] months = { "January", "February", "March",
"April", "May", "June", "July",
"August", "September", "October",
"November", "December" };

int[] days = { 31, 28, 31, 30, 31, 30, 31,
31, 30, 31, 30, 31 };

double average = 0.0;
int lowest = 0;
String lowestMonth = " ";
int sum = 0;

for (int index = 0; index <= months.length; index++)
{
System.out.println(months[index] + " has " + days[index] + " days.");
}

lowest = days[0];

for (int index = 0; index < months.length; index++)
{
if (days[index] >= lowest)
{
    lowest = days[index];
    lowestMonth = months[index];
sum = sum + days[index];

}
average = sum / 12;
}
System.out.println("Lowest Month is " + lowestMonth + " with " + lowest + " days");
System.out.printf("Average days in each month is %4d days", average);

}
}

Answer 1

You Did small mistakes...

in for loop, if condition

Program :

public class MonthDays
{
public static void main(String[] args)
{
String[] months = { "January", "February", "March",
"April", "May", "June", "July",
"August", "September", "October",
"November", "December" };

int[] days = { 31, 28, 31, 30, 31, 30, 31,31, 30, 31, 30, 31 };
double average = 0.0;
int lowest = 0;
String lowestMonth = " ";
double sum = 0;

for (int index = 0; index < months.length; index++)
{
System.out.println(months[index] + " has " + days[index] + " days.");
}

lowest = days[0];

for (int index = 0; index <months.length; index++)
{
if (days[index] <= lowest)
{
lowest = days[index];
lowestMonth = months[index];
}
sum = sum + days[index];
}
average = sum / 12;
System.out.println("Lowest Month is " + lowestMonth + " with " + lowest + " days");
System.out.printf("Average days in each month is %4f days", average);

}
}

Screen shot of the program

Output: