Lab46 Wiki

Standard I/O

The normal input and output methods of your machine

Your standard input for most machines is the keyboard
Your standard output for most machines is the monitor
fprintf(stdout,“you win”)
scanf(stdin,“%s”, word)

Header Files

A header file is a file that the compiler loads and writes into your c file before compiling your own code.
This adds basic functions depending on the header file loaded

Header files are usually written as #include <headername.h>

Pointers

Pointers are a block of ram that points to another part of ram.

When you have a pointer, its ram block holds a specific address. That address is the address of what it is connected to. For example we have two variables, one is a point A, and one is just a normal variable B.

We declare that B = 5. We declare that A points to the location of ram where B is. When we call for A itself, it shows us the address of B. When we call A as a pointer, it shows us what is in B, in this care, 5.

Arithmetic

Changes to numbers.

There are a several different arithmetic's symbols, a few examples are /,*,-,+. Each one does something different to a number. For example, 2+2. Takes the number 2, adds 2 to it, and makes it 4.

Type Casting

Forcing one type of value to act as another.

int help

(char)help

there i am forcing help to act as a char, even though its an int.

Selection Structures.

Telling the computer to do something if a specific case is true.

int a int b a = 2 b = 2 if (a == b) {

  a = b + 1

} return()

telling it that if a and b are the same, then make b equal to a + 1.

Repetition structures.

Doing the same process over again so long as something is true.

while (x == b) {

 x = b + 1

} return()

doing this loop only once in this situation, but the idea is there so long as x equals b, it will make x = b + 1

Identification of chosen keyword (unless you update the section heading above).

Definition (in your own words) of the chosen keyword.

Demonstration of the chosen keyword.

If you wish to aid your definition with a code sample, you can do so by using a wiki code block, an example follows:

/*
 * Sample code block
 */
#include <stdio.h>
 
int main()
{
    return(0);
}

Alternatively (or additionally), if you want to demonstrate something on the command-line, you can do so as follows:

lab46:~$ cd src
lab46:~/src$ gcc -o hello hello.c
lab46:~/src$ ./hello
Hello, World!
lab46:~/src$ 

State the course objective

In your own words, define what that objective entails.

State the method you will use for measuring successful academic/intellectual achievement of this objective.

Follow your method and obtain a measurement. Document the results here.

Reflect upon your results of the measurement to ascertain your achievement of the particular course objective.

• How did you do?
• Is there room for improvement?
• Could the measurement process be enhanced to be more effective?
• Do you think this enhancement would be efficient to employ?
• Could the course objective be altered to be more applicable? How would you alter it?