Question

In C

Create a multi-dimensional array and print it out forwards, backwards and then transpose.

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#include<stdio.h>

int main(){

                //creating constants for storing array sizes (rows and columns)

                const int rows=5, cols=4;

                //creating a 2d array of rows x cols size

                int array[rows][cols];

                //a variable used to assign values to each cell

                int counter=1;

                //looping through each row

                for(int i=0;i<rows;i++){

                                //looping through each column

                                for(int j=0;j<cols;j++){

                                               //assigning current value of counter to current position

                                               array[i][j]=counter;

                                               //updating counter

                                               counter++;

                                }

                }

               

                //printing array forwards

                printf("Array in forwards\n");

                //looping through each row

                for(int i=0;i<rows;i++){

                                //looping through each column

                                for(int j=0;j<cols;j++){

                                               //printing element at current row and column

                                               printf("%2d ",array[i][j]);

                                }

                                printf("\n");

                }

               

                //printing array backwards

                printf("\nArray in backwards\n");

                //looping through each row from last to first

                for(int i=rows-1;i>=0;i--){

                                //looping through each column from last to first

                                for(int j=cols-1;j>=0;j--){

                                               //printing element

                                               printf("%2d ",array[i][j]);

                                }

                                printf("\n");

                }

               

                //printing transpose

                printf("\nTranspose\n");

                //looping through each column

                for(int i=0;i<cols;i++){

                                //looping through each row

                                for(int j=0;j<rows;j++){

                                               printf("%2d ",array[j][i]);

                                }

                                printf("\n");

                }

                return 0;

}

/*OUTPUT*/

Array in forwards

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

17 18 19 20

Array in backwards

20 19 18 17

16 15 14 13

12 11 10 9

8 7 6 5

4 3 2 1

Transpose

1 5 9 13 17

2 6 10 14 18

3 7 11 15 19

4 8 12 16 20