Lab 6
Short Answer 1. The difference between a module and a function is the module is a group of statements that exist within a program for the purpose of performing a specific task. You are writing its definition. A function is a special type of module and most commonly referred to library functions which a made for different programming languages. 2. The three characteristics of a function in a IPO chart are: function header, function body, return statement. 3. The real number’s fractional part in a conversion function that is used to convert a real number to an integer usually shows up as a type mismatch error. A integer variable cannot hold fractional values. It’s better to convert the result of the math expression to an integer and then assign that integer to the variable. 4. A substring is a string within a string. The substring function typically accepts three arguments: (1) a string that you want to extract a substring from (2) the beginning position of the substring, and (3) the ending position of the substring. 5. The stringToInteger function accepts a string as an argument, converts it to an Integer, and returns the Integer value. The stringToReal function works the same way, but it converts a string to a Real, and usually then gets stored in the realNumber variable. 6. IsInteger function determines whether a string can be converted to a Integer and the isReal function determines whether a string can be converted to a Real. They use If Then Else statements.

Programming Exercises
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