Dave Sinkula

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Code Snippets By: Dave Sinkula

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Read a Floating-Point Value from the User, Part 3 in c

This snippet uses strtod to be a little more stringent. (View Snippet)

XOR Encryption in c

This snippet is an example of using XOR encryption to encrypt/decrypt a file. It uses command-line input parameters as follows:argv - name of input file to encrypt/decrypt argv - name of output file argv - crypt keyFor example, an input file called "main.c" is used to create an output file... (View Snippet)

Strings: Reversal, Part 2 in c

In Part 1, the code reversed the string in place. This version uses a source and a destination string. (View Snippet)

Hex Dump in c

This is a quick and dirty example of a hex dump utility. Not much in the way of special features -- it just dumps the contents of a hard-coded filename in hex and also shows the characters. An example that can show the basics of making your own. (View Snippet)

Parsing a String into Tokens Using strcspn, Part 3 in c

Yet another angle at this same topic. See also Parsing a String into Tokens Using strcspn, Part 1 and Parsing a String into Tokens Using strcspn, Part 2. (View Snippet)

Parsing a String into Tokens Using strcspn, Part 2 in c

This snippet is a variation of the code in Parsing a String into Tokens Using strcspn, Part 1. It uses canned strings rather than reading from a file. See also Parsing a String into Tokens Using strcspn, Part 3. (View Snippet)

Read an Integer from the User, Part 3 in c

This is a strtol version of Read an Integer from the User, Part 2. (View Snippet)

Strings: Comparing, Case-Insensitive in c

How might I write an implementation in C of a case-insensitive version of the standard library function strcmp? Here's how I might. This this is often available as a nonstandard function that may be called stricmp, _stricmp, strcmpi, or strcasecmp. See also Strings: Comparing. (View Snippet)

Morse Code in c

This code uses a structure to map a letter to an equivalent representation of Morse code. It simply loops through either a string to encode or decode looking for text to substitute with a replacement string or character. Output is presented to the stdout. (View Snippet)

Currency: Making Change in c

Break down an amount into units of dollars and cents. (View Snippet)