alejandro-medina / c-scripts

C scripts for practice

Intro to algorithms class

Types of programming languages

Variables

Are used to store values with a specific name To use a variable we need to declare it first, at the beginning of our program, the sintax is type [name]; Example:

int age;
char option;
float bmi;

You can also assign a value to the variable in two ways: at the moment of declaring or later:

int age;
age = 19; // stores the value 19 inside the var "age"

float bmi = 21.76; // declares the var bmi and assigns directly its value

Now you can use variables inside your program in a specific scope, but that is another topic. For the while, use it inside a function or your main function.

Functions

Functions are a pretty way to optimize the code inside your program. They are used to avoid repeating code. Basically, when you have a piece of code that is being repeated several times in your program: you're doing sth wrong. The advantajes of functions is that you can use them many times as you want with different parameters.

You can declare a new function is your programs as: returning_type [name_of_your_function] (params)

Example of a function that will return the square of a number:

// a fucntion that returns an int value
int function square(int num) {
	return num*num; // return is important
}

Now you can use yor square function with different arguments as:

int a = square(4); // returns 16
int b = square(3); // returns 9
int c = square(8); // returns 64

Pointers

Arguments

Bash commands

Git