Introduction

This goes over the first half of Chapter 1’s material

Why C?

• It is imperative (the structure of the language is familiar)
• It is simple
• It does no hand-holding
• Applicable to the future
• Memory is easy to deal with

C is a low level language as it is compiled from a .c program “text” file.

Code starts in main()

Data

• Refer to Variables
• Any kind of information used in programs is data. These are stored in “variables” which is in our RAM.
• In C, we specify the data type of variables and that type cannot change.
• Fundamental types are int, float\double, char, and void
  • Well, void is for “lack” of data type and cannot be used for variables.
• He goes over his suggested Program Structure. A fun 3 step process!

Hello World

/*
This program prints hello world. Poggers
*/ 
#include<stdio.h>
 
int main(void)
{
	printf("Hello world!\n");
	return 0;
}

^ He just goes over printf with this fun example ^

todo How does one do exercise 1.1. lol how am i stuck on the first one.

He then goes over if statements and while/for loops

int i = 0;
 
for ( ; i < 10; i++)
{
    printf("%d\n", i);
}

Wow that is a thing you can do.

for (int i = 0; ; i++)
{
	if (i >= 100)
	{
		break;
	}
}
// Above is similar to a regular for loop, but with more lines.
 
for ( ; ; )
{
	// This will loop forever since there is no conditional to terminate it.
}

So in general

• The first statement lets you initialize a variable if you wanna
• The second states a conditional to check every loop. Will go infinitely if there is none
• The last will run every time the loop reaches the end (kinda like the last line)

// For loop #1
for (int i = 0; i < 10; i++) printf("%d", i);
 
printf("\n");
 
// For loop #2
int i = 0;
for ( ; ; )
{
	if (!(i < 10)) break;
 
	printf("%d", i);    
 
	i++; // Always the VERY last line in the for loop
}

• #1 and #2 are equivalent for loops! The bottom one is just more terse.

Cardscs2-1

What kind of language is c? #card It is low-level in that it is compiled

Test::Answer

What are 5 reasons why c is taught as a beginner language? ?

1. It’s very simple
2. No handholding
3. Memory Management is simple
4. It’s imperative
5. Applicable to the future