Wrirte a program that inputs ordinals M an N, and outputs MxN grid made with «+» and «-». You should write a macro that accepts three parameters: a number of cells and two characters, and outputs a line like this:
printline 4, '+', '-'
- →
+-+-+-+-+
3 4
+-+-+-+ | | | | +-+-+-+ | | | | +-+-+-+ | | | | +-+-+-+ | | | | +-+-+-+