Basics and Introduction

Making

Program

a file that gives instructions to the hardware of a computer

Source File

the file containing the programming language code

Compile

to translate source file into machine language

Executable File

a file that is a computer program

Language

Machine

ones and zeroes that the computer understands for instruction

Assembly

a programming language that strongly resembles machine language

Low Level

a programming language that computer jargon and English

High Level

a programming language that greatly resembles English

Errors

Syntax Error

an actual error in the written program

• These are the actual buggers that prevent a program from running.
• They can be as simple as leaving out a comma, or big as incorrect declarations of classes.
• Not only that they chain react and add a $%*# more errors--my max was 1572.
• Just take them one at a time and starting from the top of the list.

Logical Error

the program run but has a logical error and does not do what you want

• These are tricker to spot.
• Usually in compilers they are given as possible errors.
• Fix all possible error.
• Then check in the blocks of code with logic, such as loops and if statements.
• Make sure your code does what you want.

Compile Time Error

the program will shut down during compilation error

• This usually occurs when syntax errors exist.
• Or when the compiler messes.
• Some mess ups are memory, existing files, and files in use.

Run Time Error

the program will shut down (or never stop) when it is working and running

• A logical error often causes this.
• Sloppy coding also promotes this because the program does not deal with all conditions.

Value and Memory Change

Typecast

surrounding a variable with a variable type and parenthesis to promote it to the desired type

• Useful when mixing two different but similar variable types, such as int and float.

Promotion

a variable will be treated as another with more memory for operation, passing as parameters, and type casting

• This occurs when two different types are mixed and no type casting is used.

Truncation

the cutting off of decimal values due to type casting or passing as parameters

Operation

Integer Division

arithmetic division between two numbers in which only the whole number part of the quotient is the answer

• E.g. 10 INTDIV 3 = 3, 20 INTDIV 9 = 2

Modulus Division

arithmetic division between two numbers in which only the remainder is the answer

• E.g. 10 INTDIV 3 = 1, 20 INTDIV 9 = 2

First Writings

Comments

lines of code which are not translated

• These are often used to help explain coding to other computer scientists.
• Elegant programming is not only code but comments to explain it. All of my example code make use of comments.

Hello World

a program in which displays the message "Hello World!"

• This is the first program every one learns to write. It is a classic.

Prev -- Back to Portal -- Next