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[Zoidy]

Hello everybody,

I've just joined up as I've just become a computer engineering student at the Danish Technical University :)

The studying is going well, but every once in a while I am faced with a problem I cant seem to solve... as I am face with now :p

I am writing a program to print the date after input date from the user... i.e. if they type in 23-10-2010, the System.out.println("24-10-2010");

Being the perfectionist I am I wish to end the 23 with rd, 24 with th, etc. I am playing with endsWith, but I cant seem to get endsWith to work with int.

so this is what I'm playing with:

int day;

System.out.print("Enter the desired day (1-31): ");
Scanner theday = new Scanner(System.in);
day = theday.nextInt();

// I havent included here the while loop for ensuring the correct input ranges
// Now comes the fun part... how to add st,nd,rd or th to numbers
// I've been thinking along the lines of:

System.out.print(day);

switch (day)
case (day.endsWith(1)):
System.out.print("st ");
break;
case (day.endsWith(2)):
System.out.print("nd ");
break;
case (day.endsWith(3)):
System.out.print("rd ");
break;
else:
System.out.print("th ");
break;

// The desired result should be

1st or 2nd or 3rd or 4th

// But again.... I cant seem to find the correct code to obtain this result. Someone please help :p

Best regards
Zoidy

[m00nchile]

What about using the modulo operator to get the last digit of an int?

[venerik]

The modulo operator would have my suggestion as well. But don't forget 11, 12 and 13 are special in respect to 1, 2, 3 and 21, 22 and 23!

Furthermore, you haven't declared day. I think you meant it to be a String. But as far as I know you cannot use a String in the switch statement.

Success,
Erik

[Zoidy]

I take it modulo is the same as modulus operator? But how can I use the modulus to get the last digit of an int when it finds a remainder?

day is an int as required input is 1-31 (I'll upgrade original posting ;), and good point regarding 11,12, and 13.. I'll have to think that one in ;)

[pbrockway2]

But how can I use the modulus to get the last digit of an int when it finds a remainder?

For decimal numerals the last digit is the character representing the remainder after division by 10.

[Zoidy]

ok, I resolved this issue using the if else function.

if (month==1,....)
{
if(day<1 || day>31)
{
System.out.printout("Try again");
}
}

;)