----------------------------------- Sniper4Life Wed Apr 08, 2009 7:28 pm My First Program! ----------------------------------- This is my first Python script. I started Python yesterday and I just wanted the CompSci community to see it and evaluate it. The general idea of the calculator is thought of from another script written by someone else NOT me. I just added in a couple of more functions to the script, and it was originally started from scratch. Its not long or anything but I'm still somewhat proud of it :D. Please do tell me better ways I could have made this script(shorter...more efficient), and remember, criticism is encouraged! ----------------------------------- Sniper4Life Wed Apr 08, 2009 7:29 pm Re: My First Program! ----------------------------------- No need to download...here is the code! def options(): print "Welcome to Abrar's Program!" print " " print "1) Add numbers" print "2) Subtract numbers" print "3) Multiply a number" print "4) Divide a number" print "5) Use Exponents" print "6) Quit Program" print " " return input ("What would you like to do?") def add (a,b): print a,"+",b,"=", a+b def sub (a,b): print b,"-",a,"=",b-a def mult (a,b): print a, "*" , b , "=", a*b def div (a,b): print a,"/",b,"=", a/b def sqaure (a,b): print a," ", "powered by", " ", b,"=", a**b loop=1 function=0 while loop==1: function=options() if function==1: add(input("The number: "), input("plus: ")) elif function==2: sub(input("This number: "), input("subtracted from this number: ")) elif function==3: mult (input("First number: "), input("second number: ")) elif function==4: div (input("This number: "), input ("divided by this number: ")) elif function==5: sqaure(input("The base: "), input("the exponent: ")) elif function==6: loop = 0 print "See you next time on Abrar's Calculator!" Mod Edit: Remember to use syntax tags! Thanks :) Code Here ----------------------------------- saltpro15 Wed Apr 08, 2009 7:53 pm RE:My First Program! ----------------------------------- nice, looks familiar though ;) I'm thinking of writing a new game with pygame, maybe if it's any good i'll post it ----------------------------------- Sniper4Life Wed Apr 08, 2009 8:03 pm Re: My First Program! ----------------------------------- lol yes very familiar :wink: i didnt copy and paste atleast :D i remembered what i read :P then learned to do it on my own :D im gonna add more stuff to it later on? like getting the square root...finding the circumference of a cirlce...radius of a circle...stuff like that basic...easy... anyways i could improve on it? ----------------------------------- saltpro15 Wed Apr 08, 2009 8:05 pm RE:My First Program! ----------------------------------- well, the suggestions you made would be excellent, I would also recommend taking advantages of python's classes, which are very handy ----------------------------------- Sniper4Life Wed Apr 08, 2009 8:09 pm Re: My First Program! ----------------------------------- u mean actually taking python classes? or the online resources available...??? and python is SOOO much easier than c++ :D man i was kind dumb to start with c++ :P btw salt...what age did you start coding? and having an interest in computers i asked wtd before but he nvr answered me :( ----------------------------------- saltpro15 Wed Apr 08, 2009 8:33 pm RE:My First Program! ----------------------------------- no, I meant the class function in python, maybe wait a bit to get into that, it's sort of advanced. I started coding in October, I am currently programming in Turing,C++ and Python, I've always been interested in comp's though EDIT I'm 15, in Grade 10 ----------------------------------- Sniper4Life Wed Apr 08, 2009 9:12 pm RE:My First Program! ----------------------------------- ok good to see you started at age 15 :D im 13 and i started in january :D i thought i was sort of "late" to all possible good programmers because i have this one friend and he is PRO with programming he's been writing scripts since he was 7 or 8 i think? so ya....i thought i was like a complete noob :P good to see i didnt start that late :P ----------------------------------- Analysis Mode Wed Apr 08, 2009 10:13 pm Re: My First Program! ----------------------------------- Not bad. Python's a pretty good language. You shold also try Pascal, always a good language to start with, easy to read, etc. C++ should be your second or third language (it's my second), much more powerful, STL's, etc. you should know the basics of programming (variables, procedures/functions, loops, etc.) before moving onto C++. Knowing PAscal made it much easier to learn c++ in my case. ----------------------------------- wtd Wed Apr 08, 2009 11:54 pm RE:My First Program! ----------------------------------- Replace the test in the loop. You can more directly express this in the following form. [code]while True: if blah: ... break[/code] Also, your conditional has some other issues. A) The input function returns a string. You check for equality against integers. What do you expect if I input 4 as my choice of options? Now, what actually happens? B) Your conditional is not robust. What happens if I choose option 13? What should happen? ----------------------------------- Sniper4Life Thu Apr 09, 2009 6:21 am Re: My First Program! ----------------------------------- hehe wtd i noticed the thing you said too :D the option 13 thing :D see...problem is...i DONT KNOW how to do that efficiently...so THERES my problem...so could you tell me how i could do that? and the while True: if blah *** break what do you mean with it? ----------------------------------- DemonWasp Thu Apr 09, 2009 10:01 am RE:My First Program! ----------------------------------- I'll explain: [code] while true // this means "loop forever, until I say break" if blah // test for some condition. You have lots of these above; in particular, when it says function==6, you're setting "loop" to zero, meaning "stop looping" break; // this means "stop looping right now" [/code] Side note: How long before someone finally stamps a "Not for first-time coders" label on C++? That language is probably just about the worst thing for a new programmer - worse than Windows, worse than a bad teacher. It is the graveyard of new programmers. ----------------------------------- Sniper4Life Thu Apr 09, 2009 11:38 am Re: RE:My First Program! ----------------------------------- Replace the test in the loop. You can more directly express this in the following form. B) Your conditional is not robust. What happens if I choose option 13? What should happen? k first...could anyone explain to me an EFFICIENT way of making any number over 6 do something specific? using a loop or sumthing? and btw demonwasp it doesnt really help improve the performance of the program...just the code itself? ----------------------------------- [Gandalf] Thu Apr 09, 2009 12:01 pm RE:My First Program! ----------------------------------- [code]elif function > 6:[/code] ----------------------------------- saltpro15 Thu Apr 09, 2009 2:36 pm Re: RE:My First Program! ----------------------------------- ok good to see you started at age 15 :D im 13 and i started in january :D i thought i was sort of "late" to all possible good programmers because i have this one friend and he is PRO with programming he's been writing scripts since he was 7 or 8 i think? so ya....i thought i was like a complete noob :P good to see i didnt start that late :P you can really start whenever. It all depends on how well you take to programming. will you be in high school next year? if so, I recommend signing up for [url=www.dwite.org]DWITE it's an excellent way to get experience in programming contests, Dan and Tony host it monthly October-February. ----------------------------------- wtd Thu Apr 09, 2009 4:32 pm RE:My First Program! ----------------------------------- I started programming when I was 18, if memory serves. ----------------------------------- Sniper4Life Fri Apr 10, 2009 8:41 am RE:My First Program! ----------------------------------- ya i kno you can really start whenever...it all depends on how much time you put into the subject and how easily you understand it....im just glad i got sort of a "head start" compared to saltpro and wtd