(Display the ASCII character table) Write a program that...

(Display the ASCII character table) Write a program that displays the characters in the ASCII character table from ! to $\sim .$ Display ten characters per line. The characters are separated by exactly one space.

Key Concepts

ASCII

ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numeric values to letters, digits, punctuation marks, and other symbols. Understanding ASCII is fundamental for programming tasks that involve text processing and character manipulation because it provides a standardized mapping between numbers and characters.

Looping Constructs

Looping constructs, such as for-loops or while-loops, are essential for iterating over a sequence of values. In the context of displaying a range of ASCII characters, loops allow the program to systematically traverse the numeric codes corresponding to the desired characters, making the coding process efficient and reducing manual repetition.

Output Formatting

Output formatting involves structuring the output text to meet a specific design or readability criteria. This includes tasks like separating characters by a defined delimiter (in this case, a single space) and ensuring a specified number of items per line. Mastery of output formatting is essential in programming for creating readable and user-friendly display outputs.

Character Conversion

Character conversion is the process of converting numeric values, such as an ASCII code, into their corresponding character representations. Many programming languages offer built-in functions or operators to perform such conversions, which simplifies tasks like generating a table of characters from numerical codes.

Transcript

00:01 Okay, in this problem, we want to print out a whole bunch of ascii characters, and i'm going to start off using a four loop.

00:09 I'm just going to use the value x in range.

00:13 And if you look up the ascii characters that we're looking for, the exclamation point is 33, and the tilde is 126.

00:24 And so i want to use 127 there again.

00:26 Range never reaches this last number.

00:30 It always falls one short of it.

00:33 And so i need to keep track of a couple things.

00:39 Let's just actually do a print right there.

00:43 I'm going to say print chr turns an integer into a character value.

00:51 So if i just say print x, this isn't what we want yet, but we can see we get all the values from exclamation point through the tilde.

01:02 And so now we need to just collate them a little bit.

01:06 So let's get rid of that.

01:09 We will use this chr here in a second.

01:14 So what we want to do is we want to build a string.

01:19 And i'm just going to call it a character string and set it equal to an empty character string.

01:30 And i want to say when i'm going to say car string i'm going to add the character i just found to it and then we want to separate everything with a blank space and so i put a blank space between behind it so now if i was to print the car string i would get a continuous string of all the values that are in that range...

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