About the reverse function

#1

i want to ask that in program when we write
reverse (a[i],a[i]+n)
how (a[i]+n) is 4 as we know that a[i] is 1 in that problem and n=4;

#2

hello @manoj2597

its a 2d matrix .
here a[i] will not give u element value.
instead it will return starting address of ith row (row counting from 0)
so a[i] is starting adress of ith row and a[i]+4 is ending address(adress next to last element of ith row).

#3

but how it is returning address. please elaborate it

#4

and in this problem u also tell how reverse (a[1],a[1]+n) reverse 2 by 3

#5

read about reverse function , it will not only reverse two element instead it will reverse the complete array.
a[1],a[1+n] will reverse the complete row one.
if initially it is [1,2,3,4] then it will become [4,3,2,1]

to understand this read how 2d matrix is stored in memory (row major /colum major).
and how address of any cell of that matrix is calculated (to understand this u should know pointers in depth).

#6

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