I tried to understand C array from various sources and then looked into the codes below but I cannot understand it. Can you please tell me what the code exactly does and what they meant to write?
why they declared five variables matrix[3][3],i,j,r,c in the first place?
http://s2.postimage.org/p9rznkq2g/Tw...onal_array.gif
Last edited by learning_grc; 09-21-2011 at 03:09 PM.
You made a screenshot of your code? How about actually just posting it here between code tags like a normal person?
Quzah.
Hope is the first step on the road to disappointment.
Thank you friend. But in the source it was image. Anyway, I typed now in notepad and made copy paste hereOriginally Posted by quzah
Code:int main() { int matrix[3][3],i,j,r,c; clrscr (); printf ("Enter the order of matrix\n"); scanf("%d%d", &r, &c); printf ("Enter elements of %d * %d matrix\n", r,c); for (i=0; i<r; i++) for (j=0; j<c; j++) scanf ("%d", &matrix[i][j]); printf ("Given matrix:\n"); for (i=0; i<r; i++) { for (j=0; j<c; j++) printf ("%d\t", matrix[i][j]); printf ("\n"); } printf ("%d\t", matrid [2][2]); getch (); return 0; }
They have declared five variables to:
matrix[3][3] - declare a 3x3 array.
i - loop through matrix[ HERE ][ ]
j - loop through matrix[ ][ HERE ]
r - stop counter i
c - stop couner j
The problem here is that you never make sure r and c are less than 3.
Quzah.
Hope is the first step on the road to disappointment.
You should really find a better source for learning C, than watching crappy animated GIF files generated by a TurboC programmer.
why not 1,2,3,4,5 is output when I expected 1,2,3,4,5,6 for below codes
How about http://www.eskimo.com/~scs/cclass/cclass.html
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
