Visual F# 100 Examples: Example 12 and 13

This is the continuation of our planned 100 Visual F# examples. By the way, the bugs in examples number 7 to 11 had been fixed. My apologies, I should’nt have written those without using Visual F# compiler:)


Problem: Make a console application that will asks the user to enter the day that he was born and display his character or future based on the famous nursery rhyme written in England, “Monday’s Child”.

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1. open System  
2. //changes the console application title  
3. System.Console.Title<-"Tell the Future"  
4. //adds foreground color  
5. System.Console.ForegroundColor<-ConsoleColor.Cyan  
6. printfn "What day were you born?"  
7. let strday=System.Console.ReadLine()  
8. //clears the screen  
9. System.Console.Clear()  
10. //converts the inputs to lowercase then compare it our  
11. //specified values  
12. if strday.ToLower()="monday" then  
13.     printfn "Monday's child is fair of face"  
14. else if strday.ToLower()="tuesday" then  
15.     printfn "Tuesday's child is full of grace"  
16. else if strday.ToLower()="wednesday" then  
17.     printfn "Wednesday's child is full of woe"  
18. else if strday.ToLower()="thursday" then  
19.     printfn "Thurdays's child has far to go"  
20. else if strday.ToLower()="friday" then  
21.     printfn "Friday's child is loving and giving"  
22. else if strday.ToLower()="saturday" then  
23.     printfn "Saturday's child works hard for a living"  
24. else if strday.ToLower()="sunday" then  
25.     printfn "Sunday's child is bonny and blithe and good and gay"  
26. else  
27.     printfn "Invalid input"  

open System
//changes the console application title
System.Console.Title<-"Tell the Future"
//adds foreground color
System.Console.ForegroundColor<-ConsoleColor.Cyan
printfn "What day were you born?"
let strday=System.Console.ReadLine()
//clears the screen
System.Console.Clear()
//converts the inputs to lowercase then compare it our
//specified values
if strday.ToLower()="monday" then
    printfn "Monday's child is fair of face"
else if strday.ToLower()="tuesday" then
    printfn "Tuesday's child is full of grace"
else if strday.ToLower()="wednesday" then
    printfn "Wednesday's child is full of woe"
else if strday.ToLower()="thursday" then
    printfn "Thurdays's child has far to go"
else if strday.ToLower()="friday" then
    printfn "Friday's child is loving and giving"
else if strday.ToLower()="saturday" then
    printfn "Saturday's child works hard for a living"
else if strday.ToLower()="sunday" then
    printfn "Sunday's child is bonny and blithe and good and gay"
else
    printfn "Invalid input"

Problem: Develop a console application that will asks the wind speed in kilometer per hour(kph) and display its equivalent Philippine Storm Signal number.

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1. open System  
2. //changes the console application title  
3. System.Console.Title<-"Determine Storm Signal Number"  
4. //adds foreground color  
5. System.Console.ForegroundColor<-ConsoleColor.Cyan  
6. printfn "Enter wind speed(kph):"  
7. let intspeed=Convert.ToInt32(System.Console.ReadLine())  
8. //clears the screen  
9. System.Console.Clear()  
10. //if the wind speed ranges from 30 to 60  
11. if intspeed>=30 && intspeed<=60 then  
12.     printfn "Storm signal number 1"  
13. //if the wind speed ranges from 61 to 100  
14. else if intspeed>60 && intspeed<=100 then  
15.     printfn "Storm signal number 2"  
16. //if the wind speed ranges from 101 to 185  
17. else if intspeed>100 && intspeed<=185 then  
18.     printfn "Storm signal number 3"  
19. //if the wind speed is greater than 185  
20. else if intspeed>185 then  
21. printfn "Storm signal number 4"  
22. else   
23. printfn "Invalid input"  

open System
//changes the console application title
System.Console.Title<-"Determine Storm Signal Number"
//adds foreground color
System.Console.ForegroundColor<-ConsoleColor.Cyan
printfn "Enter wind speed(kph):"
let intspeed=Convert.ToInt32(System.Console.ReadLine())
//clears the screen
System.Console.Clear()
//if the wind speed ranges from 30 to 60
if intspeed>=30 && intspeed<=60 then
    printfn "Storm signal number 1"
//if the wind speed ranges from 61 to 100
else if intspeed>60 && intspeed<=100 then
    printfn "Storm signal number 2"
//if the wind speed ranges from 101 to 185
else if intspeed>100 && intspeed<=185 then
    printfn "Storm signal number 3"
//if the wind speed is greater than 185
else if intspeed>185 then
printfn "Storm signal number 4"
else 
printfn "Invalid input"

Visual F# 100 Examples: Example 11

Problem: Make a simple crack the treasure chest console application game.

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1. // Learn more about F# at http://fsharp.net  
2.   
3. open System  
4. //change the title to Crack the Safe  
5. System.Console.Title<-"Crack the Safe"  
6. //change the foreground color to green  
7. Console.ForegroundColor<-ConsoleColor.Green  
8. //dislay the game title screen  
9. printfn "\t\t\t Crack the Safe"  
10. printfn "\t\t\t Press enter to continue..."  
11. //waits for a keypress from the user  
12. System.Console.ReadLine()|>ignore  
13. //Game action sequence  
14. printfn "\t\t\t You have found a legendary treasure chest"  
15. printfn "\t\t\t believed to contain the rarest gem on Earth"  
16. printfn "\t\t\t Press enter to continue... "  
17. //waits for a keypress from the user  
18. System.Console.ReadLine()|>ignore  
19.   
20. printfn "\t\t\t this chest can be opened only by"  
21. printfn "\t\t\t entering a mysterious 4-digit key code"  
22. printfn "\t\t\t Press enter to continue..."  
23. //waits for a keypress from the user  
24. System.Console.ReadLine()|>ignore  
25.   
26. let random=new Random()  
27. let intkeycode=Convert.ToInt32(random.Next(1000,9999))  
28.   
29. printfn "\t\t\tEnter the keycode:"  
30. let intusercode= Convert.ToInt32(Console.ReadLine())  
31. //if usercode is equal to the computer generated code then  
32. if intusercode=intkeycode then  
33. //display a congratulatory message  
34.     printfn "\t\t\Congrats You have opened the treasure chest."  
35.   
36. //otherwise   
37. else  
38.     printfn "\t\t\tInvalid Code"  
39.   
40. printfn "\t\t\tPress enter to continue... "  
41. System.Console.ReadLine()|>ignore  
42. printfn "\t\t\tGame Over"  

// Learn more about F# at http://fsharp.net

open System
//change the title to Crack the Safe
System.Console.Title<-"Crack the Safe"
//change the foreground color to green
Console.ForegroundColor<-ConsoleColor.Green
//dislay the game title screen
printfn "\t\t\t Crack the Safe"
printfn "\t\t\t Press enter to continue..."
//waits for a keypress from the user
System.Console.ReadLine()|>ignore
//Game action sequence
printfn "\t\t\t You have found a legendary treasure chest"
printfn "\t\t\t believed to contain the rarest gem on Earth"
printfn "\t\t\t Press enter to continue... "
//waits for a keypress from the user
System.Console.ReadLine()|>ignore

printfn "\t\t\t this chest can be opened only by"
printfn "\t\t\t entering a mysterious 4-digit key code"
printfn "\t\t\t Press enter to continue..."
//waits for a keypress from the user
System.Console.ReadLine()|>ignore

let random=new Random()
let intkeycode=Convert.ToInt32(random.Next(1000,9999))

printfn "\t\t\tEnter the keycode:"
let intusercode= Convert.ToInt32(Console.ReadLine())
//if usercode is equal to the computer generated code then
if intusercode=intkeycode then
//display a congratulatory message
    printfn "\t\t\Congrats You have opened the treasure chest."

//otherwise 
else
    printfn "\t\t\tInvalid Code"

printfn "\t\t\tPress enter to continue... "
System.Console.ReadLine()|>ignore
printfn "\t\t\tGame Over"