I had a question about C++ if anybody can answer it for me, I will really appreciate it.
Say I create an output file and I want to create a 50 x 50 grid in the file. How can I do this without using multidimensional arrays? I was thinking of this. However, I think the newline character on each line is not considered to be part of the canvas:
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//set up 50x50 canvas
for(int i = 1; i <= 50; i++)
for(int j = 1; j <= 50; j++)
//reset pointer to start of file
One of the things I wish to accomplish with this grid is to be able to move the pointer around. Any help will be appreciated
grid[maxcol*desired_row+desired_col] = value; //same as a 2-d array grid[desired_row][desired_col].
there are 4 or 5 reasons why 1-d is the better way.
1) you can reshape something. Maybe you want to look at it as a 10x250 for some reason.
2) you can read and write it to a binary file without hassle
3) you can iterate, search / sort / more <algorithms> on the whole thing instead of per row which is faster for many needs
4) you can avoid some memory /paging problems easier
5) you can transpose /rotate/etc in place
all the above works for vector / valarray as well instead of vector<vector< design.