#Test series

Question

what is the output?

Comments

Maybe 14.

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14 is given as the answer.....can you explain how you trace out the code?

Answer 1

ANS : 14 

Comments

how pointer is pointing to 1,2,5,6....not getting it

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p = arr // p is pointing to first 2d array

m = 0 .....ptr = p + m = p ;  ptr is pointing to the first element of first 2d array

ptr = ptr + row  // row = 0

ptr = ptr + col(0)

sum = sum + *(ptr + col)  // here differencing is done *(ptr+ 0) // will give 1

similarly *(ptr+col(1))  // will give 2

and come out of  innermost for loop. Note that row +=2 ....thus row becomes 2  and it will come out of second for loop.

In the outermost loop again ptr = p + m(1)    // ie ptr will point to first element of second 2d array and same procedure will be repeated to give 5 and 6.

I have assumed Row wise order.