Thread: vector of substrings

:p ok

Code:

#include <iostream>
#include <string>
#include <cctype>

int main(int argc, char *argv[])
{
	if (argc != 2)
	{
		std::cout << "Usage\n\taa.py <number>" << std::endl;
		return 1;
	}
	std::string fontMap[] = {
		std::string("###  #  ### ### # # ### ### ### ### ### "),
		std::string("# # ##    #   # # # #   #     # # # # # "),
		std::string("# #  #  ###  ## ### ### ###   # ### ### "),
		std::string("# #  #  #     #   #   # # #   # # #   # "),
		std::string("### ### ### ###   # ### ###   # ### ### ")
	};
	const int FONT_WIDTH = 4;
	const int FONT_HEIGHT = 5;
	std::string number(argv[1]);
	for (int row=0; row<FONT_HEIGHT; row++)
	{
		for (int col=0; col<number.length(); col++)
		{
			if (! isdigit(number[col]))
			{
				std::cout << "Error: Only digits allowed!" << std::endl;
				return 1;
			}
			int i1 = (number[col]-'0') * FONT_WIDTH;
			int i2 = i1 + FONT_WIDTH;
			while (i1 < i2)
			{
				std::cout << fontMap[row][i1];
				i1++;
			}
		}
		std::cout << std::endl;
	}
	return 0;
}