How to Print 2D Array in C

How to Print two dimensional or 2D array in C? How to print or display matrix in C? The 2D array represents a matrix.

To print two dimensional or 2D array in C, we need to use two loops in the nested forms. The loops can be either for loop, while loop, do-while loop, or a combination of them. But understanding the syntax of for loop is easier compared to the while and do-while loop.

In the nested loop, the outer loop represents the row and the inner loop represents the column. The print 2D array, write displaying logic inside the inner loop.

int arr[3][2] = {{50,60},{70,80},{90,100}};

It is similar to the 3×2 matrix,

50 60
70 80
90 100

Then the array elements are,
arr[0][0] = 50;
arr[0][1] = 60;
arr[1][0] = 70;
arr[1][1] = 80;
arr[2][0] = 90;
arr[2][1] = 100;

C Program to Print 2D Array

#include <stdio.h>
int main()
{
  // declare and initialize an array
  int arr[3][2] = {{50,60},{70,80},{90,100}};
  
  // display 2D array using for loop
  printf("The Array elements are:\n");

  // outer loop for row
  for(int i=0; i<3; i++) {
    // inner loop for column
    for(int j=0; j<2; j++) {
      printf("%d ", arr[i][j]);
    }
    printf("\n"); // new line
  }

  return 0;
}

Output:-

The Array elements are:
50 60
70 80
90 100

In this program, we have taken i<3, and j<2 because it contains 3 rows and two columns. Here we have hardcoded the 2D array values because the array was declared and initialized at the same time. Now, let us see another example to take input from the end-user and then display the 2D array.

C Program to take 2D array and print it

#include <stdio.h>
int main()
{
  // variables
  int row;
  int column;
  
  // take row and column size
  printf("Ener row size: ");
  scanf("%d", &row);
  printf("Ener column size: ");
  scanf("%d", &column);

  // declare array
  int arr[row][column];

  // take array elements as input
  for(int i=0;i<row;i++)
  {
    for(int j=0;j<column;j++)
    {
      printf("Enter arr[%d][%d]: ",i,j);
      scanf("%d", &arr[i][j]);
    }
    printf("\n");
  }
  
  // display 2D array using for loop
  printf("The Array elements are:\n");
  for(int i=0; i<row; i++) {
    for(int j=0; j<column; j++) {
      printf("%d ", arr[i][j]);
    }
    printf("\n");
  }

  return 0;
}

Output:-

Ener row size: 3
Ener column size: 2
Enter arr[0][0]: 10
Enter arr[0][1]: 20

Enter arr[1][0]: 30
Enter arr[1][1]: 40

Enter arr[2][0]: 50
Enter arr[2][1]: 60

The Array elements are:
10 20
30 40
50 60

Also See:-

• How to pass a multidimensional array to a function
• Largest and smallest in a 2D array with position
• Store temperature of two Cities for a week & display
• Matrix Operations – Addition, Multiplication, Transpose
• C program to find the sum of elements in an array
• Display even and odd numbers in an array
• Sum and count of even and odd numbers in an array
• Count the positive, negative, and zeros in an array
• Sum of positive and negative numbers in an array
• Average and numbers greater than average in array
• Smallest & largest array element with their position

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