Publication date: 04/12/2021

How do you gather numeric input from the users, perform a calculation on that input, and show the results in a new window?

Prime Numbers.jsl asks the user to enter a number and then factors the number or confirms it as a prime number (Figure 17.5). This script is a good example of aligning several types of display boxes, concatenating text, and working with conditional functions.

/* How do you gather numeric input from the users, perform a

calculation on that input, and show the results in a new window?

This script demonstrates how to create an interactive program that

asks the user to enter a number and then factors the number or confirms

it as a prime number. */

// Ask the user to enter a name and number.

nw = New Window( "Factoring Fun",

`V List Box(`

Text Box( "Choose a number between 2 and 100, inclusive. " ),

Spacer Box( Size( 25, 25 ) )

),

` V List Box(`

` Lineup Box(`

` 2,`

Text Box( "Your name " ),

uname = Text Edit Box( "< name > ", << Justify Text( Center ) ),

Text Box( "Your choice " ),

uprime = Number Edit Box( 2 )

),

Spacer Box( Size( 25, 25 ) ),

` H List Box(`

Button Box( "OK",

// Unload responses.

` username = uname << Get Text;`

` fromUser0 = uprime << Get;`

// Test input for out of range condition.

If( fromUser0 <= 1 | fromUser0 > 100,

// Send message to user that input value is out of range.

nw2 = New Window( " Factoring Fun: Message for "

|| username,

` <<Modal,`

` Text Box(`

"The number you chose, " || Char( fromUser0 ) ||

` " is not between 2 and 100, inclusive. Please try`

` again. "`

),

Button Box( "OK" )

),

/* Else the number is within range.

Test for a prime number. If not prime, factor it.

Create a vector which holds the prime numbers

within specified range. */

primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37,

41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97];

// Count the number of primes in the vector.

` p# = N Row( primes );`

isprime = 0; // Set flag.

// Make a copy of the value for processing.

fromuser1 = fromuser0;

` factors = {}; // Initialize list.`

/* Process the value by checking for prime then

factoring if needed. */

While( isPrime == 0,

// Compare value to vector of prime numbers.

If( Any( fromuser0 == primes ),

// If found, place value in factor list.

` Insert Into( factors, fromUser0 );`

isPrime = 1 // Set condition to exit While loop.

;

` ); // End For loop.`

If( isprime == 0,

For( q = 1, q <= p#, q++,

If( Mod( fromuser0, primes[q] ) == 0,

fromUser0 = fromUser0 / primes[q];

Insert Into( factors, primes[q] );

q = p# + 1 // End if-then loop.

;

` ); // End If loop.`

` ); // End For loop.`

` ); // End If/Then loop.`

` ); // End while loop.`

` cfUser0 = Char( fromUser1 );`

` nf = N Items( factors );`

If( nf >= 2,

` fmsg = "The number you have chosen has the following`

` factors: ",`

` fmsg = "The number you have chosen is a prime number: "`

);

// Show message to user about results.

nw3 = New Window( " Factoring Fun - Your Results",

` <<Modal,`

Text Box( username || ", you chose: " || cfUser0 ),

Spacer Box( Size( 25, 25 ) ),

Text Box( fmsg || " " || Char( factors ) ),

Spacer Box( Size( 25, 25 ) ),

Button Box( "OK" )

);

);

` ), // End the main OK button script.`

// Close the window and the program.

Button Box( "Cancel", nw << Close Window )

)

)

);

Figure 17.5 Factor Numbers Interactively

Want more information? Have questions? Get answers in the JMP User Community (community.jmp.com).