Write a program that draws the frame of a rectangle whose width and height are given as its two arguments, one row per line.

• Read the width from argv[1] and the height from argv[2], both parsed with atoi.
• The four corners are +. Between them the top and bottom rows use -, and the left and right columns use |.
• Fill everything inside the frame with spaces. Every row ends with a newline.
• A cell that sits on a border row and a border column at once is a corner, so a 2 by 2 box is four +.
• A width or a height of 1 collapses the two opposite edges into one, so a 1 by 1 box is a single + and a 4 by 1 box is +--+.
• If the width or the height is zero or negative, print nothing at all.
• An argument that is not a number reads as zero, so it prints nothing either.
• If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.

Write a program that draws the frame of a rectangle whose width and height are given as its two arguments, one row per line.

• Read the width from argv[1] and the height from argv[2], both parsed with atoi.
• The four corners are +. Between them the top and bottom rows use -, and the left and right columns use |.
• Fill everything inside the frame with spaces. Every row ends with a newline.
• A cell that sits on a border row and a border column at once is a corner, so a 2 by 2 box is four +.
• A width or a height of 1 collapses the two opposite edges into one, so a 1 by 1 box is a single + and a 4 by 1 box is +--+.
• If the width or the height is zero or negative, print nothing at all.
• An argument that is not a number reads as zero, so it prints nothing either.
• If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.