bug-input 2d array using scanf in C

Question

Whats wrong with this?I am getting segmentation fault during runtime.

int size;
scanf("%d",&size);
int init[size][size];
 //initial matrix
for(int i=0;i<size;i++)
  for(int j=0;j<size;j++)
     scanf("%d",init[i][j]);

qrdl · Accepted Answer · 2009-08-24 08:23:06Z

3

You need &init[i][j] rather than init[i][j] in scanf().

answered Aug 24, 2009 at 8:23

qrdl

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2 Comments

it works but i thought init[i][j] also points to address of init[i][j].

I think you mix it us with pointer arithmetics. init+i*size+j indeed will be *int, but init[i][j] will give you array element, which is int.