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Structure Type Structure Type: A data type which the user can make on thir own using the basic data types such as int, char, bool. They can show the complex structure that can't be shown just using basic data types. While array is a list of the same data type, structure type is many basic data types formed into one new data type. The variables in structure types are called member or member variable. We use the.. 공감수 0 댓글수 0 2022. 7. 16.
Character and Strings Basic In-and-Out C program just manages the in and out program as it is managing files. So consoles like keyboard and monitor is managed like a automatical file. C program uses stdin and stdout to manage in and out, which combines into stdio. Stream C Program doesn't manage the file or consoles directly; they manage it using a stream, which is abstracted flow of in and out. So basically streams .. 공감수 0 댓글수 0 2022. 7. 9.
Memory Management Memory Structure Program should be loaded to the memory, which is consisted of Code Area, Data Area, Stack Area, Heap Area The program is ran from the lowest memory to the highest memory. Code Area: Where the code itself is stored in the memory. The CPU takes one command by one and runs it. Data Area: Where the Global and Static variables are stored in the memory. The area is distributed as the .. 공감수 0 댓글수 0 2022. 7. 8.
Pointers and Arrays Constant Pointer: Pointer that can't change the address value Pointer to Constant: Pointer that refers to a constant In this example, arr[0], arr[1], arr[2] will be same as ptr_arr[0], ptr_arr[1], ptr_arr[2], which is 10, 20, 30. The ptr_arr's value is same as arr, which we can see that the array acts as a pointer, as the address value is needed to get value by using the asterisk. So the pointer.. 공감수 0 댓글수 0 2022. 7. 2.
Pointers Address Value = The starting value of the data stored in the memory. In C, that address value is expressed as 1 byte of data. EX) Data type int is 4 byte, so if the address value is 0X10, 0X11, 0X12, 0X13, it would give 0X10 for the location value since that is the starting value of the data. Pointer = The variable that holds the memory address. It is also called as Pointer Variable. Operators =.. 공감수 0 댓글수 0 2022. 7. 2.
Practice Problem Part 2 & Practice Problem #2 This is the progress I made, and since we got the efficiency and the ranking, we need to get the final value that the given capacity(200) can hold. So for each for loop, which will be ran 5 times since there is 5 values, if weight is less than capacity, which means if there is capacity to hold the weight, then that weight will be subtracted from the capacity, and the cnt will increase by its val.. 공감수 0 댓글수 0 2022. 6. 25.
Multi-Dimensional Array and Practice Problem: Part 1 Multi-Dimensional Array: Arrays that are more than two-dimensional, array that has another array for its factor. EX) Two-Dimensional: have array and array as a factor, Three-dimensional: have two dimensional array as a factor Two-dimensional Array Basic Format: type arrayname[column length][row length] Difference between one-dimensional array and two-dimensional array int arr01[6] = {10, 20, 30,.. 공감수 0 댓글수 0 2022. 6. 18.
Recursive calls and Practice Problems Recursive Call: A function calling itself repeatedly. There must be some kind of end code, or it will cause an infinite loop. This is easier for us to make, but it takes a lot of time compared to for and while loops because this is one command of repeatedly calling itself while for the loops, each loop is one command. This is a for loop, and we can see that each time the loop goes on, the value .. 공감수 0 댓글수 0 2022. 6. 4.
First-dimensional Arrays Arrays: Set of multiple data with the same data type. Each values are called elements and the location of each element are called indexes, starting from 0. The main form of array is Datatype Arrayname[Arraylength]. In this case, it is int grade[3]. We can initialize the array as soon as we declare it. The form is same, but just add elements to it, like int grade[3] = {85, 90, 45}. But setting th.. 공감수 0 댓글수 0 2022. 5. 27.
Functions, Variable Scope, and Memory ⭐️ Functions: Mixture of program codes to execute to meet a single specific purpose. ⭐️ Reason for using functions: To avoid repetitive programming, if made, then can be called for later use. If the code is divided to multiple parts, due to modular coding, the code becomes easier to read. It is also easier to fix or modify code when it is divided to functions. Basic Format of function: Return ty.. 공감수 0 댓글수 0 2022. 5. 20.
Control Flow Statement The C Program is consisted of prodecural program and imperative programs. There are many control flow statements, which allow us to control the flow of the code, since it always run downwards fron the very top. There are conditional statements and loops, as examples of control flow statements. They are covered by {}, which we call them as "block". Conditional statements: If, If/else, If/else if/.. 공감수 0 댓글수 0 2022. 5. 13.
Data Types and Operators DATA TYPE SECTION: Whole and Real Numbers For Whole Numbers (Numbers with a sign like + and - but without decimal places), if we add "unsigned" word, we can show the MSB (Most Significant Bit) size. Unsigned number can’t show the negative numbers, but we can present the two times the positive number. Signed number can present the negative and positive numbers, but it is usually not shown. If the.. 공감수 0 댓글수 0 2022. 5. 7.
Kernel and the C Kernel is the foundation of the computer, core of the computer program, the basic of every program. Everything else, including many programs and codes, runs on the top of it. The language C is close to the computer system as it is very much used for the kernel. C is very close to the computer, so it is hard to learn for humans. These types of coding languages are called low-level languages. The .. 공감수 0 댓글수 0 2022. 4. 22.
Binary Notation & Conversion, Bits and Bytes All data types have specific storage, such as 1 character is 8 byte, 1 in is 4 byte, long is 16 or 8 byte, etc. Computer sets a storage for each of those types of data. 1 byte is 8 bit, so 1 interger is 32 bits, and that is why the computer can save up to 2^32-1 of number, specifically, 2147483647 is the number we can save because even though normal is 8500000000 something, it has the signs of +.. 공감수 0 댓글수 0 2022. 4. 15.
C Foundation Review # include .h = header file, which means the most used, basic, applies to every code stdio: the default functions such as printf, scanf, etc. int main(void){ return 0; } main = 함수, function, the file that the computer searches first, tells that most of the functions are going to start here. void = empty, nothing is in here This is counted as an interger, and since it is empty, we return 0 at the .. 공감수 0 댓글수 0 2022. 4. 8.
Interpreter VS Complier Complier and Interpreter are both sequences that translates our language to and grammer to their language. However, they have different methods in translations. Complier runs every code at once, as they create a file in the computer that stores the translated langauge. That is why they need a lot of memory, and short time compared to the interpreter. Interpreter runs code one by one line (called.. 공감수 0 댓글수 0 2022. 4. 1.
Before Coding... 1) What does the coding language represent? Coding language is a way that humans interpret the language of the computers. Computers function in a two-number system (0 and 1) while we work in langauges, numbers, and many other characters. So we use the coding langauges to tell the computer what to do, as the computer translates our language to theirs. 2) Ascii Code The Computers use the ascii cod.. 공감수 0 댓글수 0 2022. 3. 12.

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