Why are we incrementing a variable k in a two dimensional array l

Question

like int a[][]=new int[4][5];
int i,j, k=0;
for(i =0;i <4; i++)
for(j=0;j<5;j++){
a [i ][j]=k;
k++;}

Answer 1

All array values are 0. After that k becomes 1. k++ is outside of both loops.

Answer 2

Now I see brackets, which combine array value asignment and incrementing of k. That fills array as {{0,1,2,3,4},{5,6,7,8,9} ... etc

Answer 3

"we are storing value of a[I][j] in k" - oh, no. We are storing the value of k in a[i][j].

Answer 4

we are storing value of a[I][j] in k but why are we incrementing k