C 2D arrays ⬜

Рет қаралды 98,177

Күн бұрын

Пікірлер: 42

@BroCodez 3 жыл бұрын

#include int main() { // 2D array = an array, where each element is an entire array // useful if you need a matrix, grid, or table of data /* int numbers[2][3] = { {1, 2, 3}, {4, 5, 6} }; */ int numbers[2][3]; int rows = sizeof(numbers)/sizeof(numbers[0]); int columns = sizeof(numbers[0])/sizeof(numbers[0][0]); printf("rows: %d ", rows); printf("columns: %d ", columns); numbers[0][0] = 1; numbers[0][1] = 2; numbers[0][2] = 3; numbers[1][0] = 4; numbers[1][1] = 5; numbers[1][2] = 6; for(int i = 0; i < rows; i++) { for(int j = 0; j < columns; j++) { printf("%d ", numbers[i][j]); } printf(" "); } return 0; }

@provokator-provocateur7603 3 жыл бұрын

This is better than Netflix. Im waiting every new episode.

@doochow9962 Жыл бұрын

This was so helpful! I am an IT student and was having trouble understanding 2D arrays. This is the best video I found .

@diusepausm 3 жыл бұрын

This is one of best language learning channel tutorial i know

@thomasplatt7329 2 ай бұрын

BRO this was a game changer. seriously, thank you

@itchybakerzz5101 3 жыл бұрын

hi, I'm hoping that you can also make a compilation of this C course, just like what you did in your java tutorial. btw, thank you for these amazing tutorials.

@Programscape 3 жыл бұрын

Helllo, I'm a student from Russia and I'm learning computer sciense, I want to say you help me so much and I hope your chanell will progress much more, good luck!

@javidmirza4584 Ай бұрын

Ну как сдал?

@republicofserbia Жыл бұрын

Thanks for helping me out. Greetings from Serbia

@JafarAlQudah Жыл бұрын

fery good fideo vro keep it in the up

@slevinshafel9395 23 күн бұрын

Thanks.i like how you explain it and going on details and explain where things are from or what is for, for example the first for(i) is rows and the seconds is columns(j). good job.

@AW-CODE 4 ай бұрын

great work keep it up 🤓

@stanleywambani860 11 ай бұрын

What my lecturer does in 2 hours you do it in 5minutes😂

@yigitdogan2k 10 ай бұрын

hi, can we use: # include # define rows # define columns and then use these defined sizes in our array and loop?

@celestialcamel1959 3 жыл бұрын

Can you make a Django course soon? Thats what I'm really waiting for!

@andrejpoljakovic5482 2 жыл бұрын

Hi! Great video! I have a question. How does the code change from this if I need for a user to input the size of rows and columns,and not be given like in this video? Any help would be great,tnx! :)

@farisraid7588 Жыл бұрын

#include int main() { int rows, columns; printf("Enter the number of rows: "); scanf("%d", &rows); printf("Enter the number of columns: "); scanf("%d", &columns); int numbers[rows][columns]; for (int i = 0; i < rows; i++) { for (int j = 0; j < columns; j++) { printf("Enter the value for element [%d][%d]: ", i, j); scanf("%d", &numbers[i][j]); } } printf(" "); for (int i = 0; i < rows; i++) { for (int j = 0; j < columns; j++) { printf("%d ", numbers[i][j]); } printf(" "); } return 0; } In this example, we first declare the rows and columns variables, and then use scanf() to read in the values from the user. We then declare the numbers array using the values of rows and columns. Next, we use two nested loops to iterate over each element of the array and prompt the user to enter the value for that element using scanf(). Finally, we print out the entire array using two nested loops and the printf() function.

@GigaChad-zx9hj Жыл бұрын

@@farisraid7588 Thanks mate

@tescenmo_Ed 3 жыл бұрын

Thank you ❤

@joeface448 7 ай бұрын

It took all the way up until I saw "print" to realize this wasn't C++. T_T

@rmsabsal1810 Ай бұрын

Can anyone explain why to get the size of column we need to specificy [0] then divide to [0][0]???

@heitor4191 Ай бұрын

This is how you can calculate the length of an array in C. First, obtain the size of the entire array (in bytes) and then divide it by the size of a single element (also in bytes). Since all elements in an array are of the same size, you can use any element to perform this calculation, and the result should always be an integer representing the total number of elements in the array. For a 2D array, to find the number of columns, you can take the array for any row (a common practice is to use the first element of the array, i.e., numbers[0]). The size of this row (or columns array) is sizeof(numbers[0]). To get the size of a single element within the columns array, use sizeof(numbers[0][0]), which refers to the first element of the first row (or the column itself). Finally, the length (or number of elements) of the columns array is sizeof(numbers[0]) / sizeof(numbers[0][0]). This should give the same length for any row in the 2D array, as each row contains the same number of columns.

@slevinshafel9395 23 күн бұрын

yeah i was thinking the same. and for now i am not interested on it but thanks to @heitor4191 i think i got it better.

@javenlim5514 8 ай бұрын

why does my code not run unless i add in the printf("rows: %d ", rows); printf("columns: %d ", columns);

@slevinshafel9395 23 күн бұрын

it runs but you cant see it. prontf is just to show you it happening. but can happen and dont show you what is done.

@na0miiii__ 3 жыл бұрын

good vid!

@umutaydn6184 Жыл бұрын

thanks for the video

@DamienLawrence-z7s 3 ай бұрын

Declaring array mentioning number of rows and columns.Why calculating number of rows and columns then? If we add an extra row or or column manually editing the code then why need to calculate number of rows and coumns on such a way?