I’m a hobbyist programmer and I program mainly in python, but am learning Ruby,which is similar to python. In this post I’m going to show you a simple python program:<\/p>\n
\r\n#program loop\r\nwhile True:\r\n#input\r\n userinput = int(input('Which decimal integer would you like converted to binary?'))\r\n#processing\r\n if userinput == 0:\r\n print('0')\r\n continue\r\n else:\r\n binary = ''\r\n while int(userinput) > 0:\r\n digit = str(userinput % 2)\r\n userinput = userinput \/ 2\r\n binary = digit + binary\r\n #output\r\n print(binary)\r\n<\/pre>\nCan you guess what this does? If you guessed that it converts decimal numbers to binary numbers, you’re correct. I’ll be explaining how it does that now. If you want to try this program yourself you have to use python 3<\/a>. I will be breaking the code up into little pieces and explain what they do.<\/p>\nINPUT<\/strong><\/h2>\nFirst lets start with the part marked as input. All it really does is ask you the question: “Which decimal integer would you like converted to binary?” and sets the variable “userinput” to the response of the user to that question.<\/p>\n
PROCESSING<\/strong><\/h2>\n1. It checks if the value “userinput” is equal to zero.\u00a0\u00a0\u00a0 if userinput == 0:<\/p>\n
1a.The program prints 0.\u00a0\u00a0print(‘0’)<\/p>\n
1b.The program skips to the next loop. \u00a0\u00a0 continue<\/p>\n
2. It does the following steps if “userinput” wasn’t equal to zero.\u00a0\u00a0\u00a0 else:<\/p>\n
2a. It prepares following steps by creating a variable called “binary” and setting it’s value to a blank string.\u00a0\u00a0\u00a0 binary = ‘ ‘<\/p>\n
2b. It will loop these statements as long as “userinput” is positive.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 while int(userinput) > 0:<\/p>\n
~this statement sets the variable “digit” to the mod (the remainder) but as a string.\u00a0\u00a0\u00a0 digit = str(userinput % 2)<\/p>\n
~this step divides “userinput” by 2.\u00a0\u00a0\u00a0 userinput = userinput \/ 2<\/p>\n
~the last step of the loop puts the variable “digit” in front of binary.\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 binary = digit + binary<\/p>\n
OUTPUT<\/strong><\/h2>\nThe output step doesn’t do much. It just prints the “binary” value.<\/p>\n
\nTERMS<\/strong><\/h2>\nvariable: an interchangeable value<\/p>\n
algorithm: a sequence of commands<\/p>\n
function: a kind of command<\/p>\n
PYTHON COMMANDS<\/strong><\/h2>\n#something –> This is a comment. It will not be read by python. You can obviously put in anything for “something”<\/p>\n
while a == b: –>This is a loop it will loop through the algorithm that come after it as long as the statement after the while is true.<\/p>\n
examplevariable = 1 –>This command sets a value to a variable.<\/p>\n","protected":false},"excerpt":{"rendered":"
I’m a hobbyist programmer and I program mainly in python, but am learning Ruby,which is similar to python. In this post I’m going to show you a simple python program: Can you guess what this does? If you guessed that … Continue reading