Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.Lære Two Dimensional Arrays | Datatyper og Variabler
C-Grundlæggende

Two Dimensional Arrays

Stryg for at vise menuen

Two-dimensional arrays are a bit like tables, think of them as arrays within arrays, with rows and columns. Declaring a two-dimensional array requires an extra set of square brackets:

int array[ROWS][COLUMNS];

Imagine a table where:

  • Row a[0]... represents the first set of data or the first array;
  • Row a[1]... is the second set;
  • Row a[2]... is the third.

When an array is placed inside another array, it's called a nested array. To access its elements, use multiple indices, each enclosed in its own set of brackets.

main.c

main.c


              
123456789101112131415

            
#include <stdio.h> 

int main() {
	// dimensional array declaration
	int array[3][4] = { 
						{1, 11, 111, 1111}, // Index `[0]`
						{2, 22, 222, 2222}, // Index `[1]`
						{3, 33, 333, 3333} // Index `[2]`
	};

    // Print the first element of the second nested array
	printf("%d", array[1][0]); 

	return 0;
}
Note
Note

All elements within an array must be of the same type.

question mark

What is the output of this code?

Vælg det korrekte svar

Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 2. Kapitel 5

Spørg AI

expand

Spørg AI

ChatGPT

Spørg om hvad som helst eller prøv et af de foreslåede spørgsmål for at starte vores chat

Sektion 2. Kapitel 5
some-alt