how to get input in 2d array in c

1#include<stdio.h>
2int main(){
3   /* 2D array declaration*/
4   int disp[2][3];
5   /*Counter variables for the loop*/
6   int i, j;
7   for(i=0; i<2; i++) {
8      for(j=0;j<3;j++) {
9         printf("Enter value for disp[%d][%d]:", i, j);
10         scanf("%d", &disp[i][j]);
11      }
12   }
13   //Displaying array elements
14   printf("Two Dimensional array elements:\n");
15   for(i=0; i<2; i++) {
16      for(j=0;j<3;j++) {
17         printf("%d ", disp[i][j]);
18         if(j==2){
19            printf("\n");
20         }
21      }
22   }
23   return 0;
24}

1#include <stdio.h>
2
3int main(){
4
5    printf("Enter the number of columns");
6    int i; 
7    scanf("%d", &i);
8    printf("Enter the number of rows");
9    int y; 
10    scanf("%d", &y);
11
12    int r[i][y];
13    int a;
14    int b;
15
16        for (a=0; a<i; a++){
17            for (b=0; b<y; b++){
18    scanf("%d",&r[a][b]);
19        }
20    }
21}
22

1int disp[2][4] = {
2    {10, 11, 12, 13},
3    {14, 15, 16, 17}
4};