This document contains code samples in Visual Basic, C, and Java that count the number of vowels, consonants, and uppercase letters in a text file. The Visual Basic code uses loops and conditional statements to iterate through each character and increment counters for each category. Similarly, the C code uses a switch statement to categorize each character. The Java code uses conditional statements within a loop to categorize each character of a string read from the file and increment counters. At the end, all three code samples print the final counter values to show the character counts.