clear
clc
close all

min = 0;
max = 10;
min_add = -100;
max_add = 100;
type = "mult"; % "mult" "div" "add" "sub" "mix"


%There is no need to modify anything below this line
diary on

% math range
columns = 5;
rows = 8;
range = abs(max-min);
range_add = abs(max_add-min_add);
% delta = 1;
% levels = range*2+1;

X = min+(range)*rand(1,rows*columns);
Y = min+(range)*rand(1,rows*columns);
X_add = min_add+(range_add)*rand(1,rows*columns);
Y_add = min_add+(range_add)*rand(1,rows*columns);
%X = uquant(X,delta,levels);
%Y = uquant(Y,delta,levels);
X = round(X);
Y = round(Y);
X_add = round(X_add);
Y_add = round(Y_add);
answer = X.*Y; 
% [N,x] = hist(X(:),[min:max]);
% bar(x,N)

switch type
	case("mult")
		%multiplication

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d X %d=____    ',X(i*columns+j),Y(i*columns+j));
			end
			fprintf('\n\n\n')
		end

		fprintf('\n\n\n\n\n')

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d X %d= %d    ',X(i*columns+j),Y(i*columns+j),answer(i*columns+j));
			end
			fprintf('\n\n\n')
		end

	case("div")
		% % division

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d / %d=____    ',answer(i*columns+j),Y(i*columns+j));
			end
			fprintf('\n\n\n')
		end

		fprintf('\n\n\n\n\n')

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d / %d= %d    ',answer(i*columns+j),Y(i*columns+j),X(i*columns+j));
			end
			fprintf('\n\n\n')
		end

	case("sub")
		% subtraction

		answer = X_add - Y_add;

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d - %d=____    ',X_add(i*columns+j),Y_add(i*columns+j));
			end
			fprintf('\n\n\n')
		end

		fprintf('\n\n\n\n\n')

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d - %d= %d    ',X_add(i*columns+j),Y_add(i*columns+j),answer(i*columns+j));
			end
			fprintf('\n\n\n')
		end

	case("add")
		%addition

		answer = X_add + Y_add;

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d + %d=____    ',X_add(i*columns+j),Y_add(i*columns+j));
			end
			fprintf('\n\n\n')
		end

		fprintf('\n\n\n\n\n')

		for i = 0:rows-1
			for j = 1:columns
				fprintf('%d + %d= %d    ',X_add(i*columns+j),Y_add(i*columns+j),answer(i*columns+j));
			end
			fprintf('\n\n\n')
		end

	case("mix")
	
		%mixed operators
		operators = ['X','/','+','-'];
		ops = ceil(3.99*rand(1,rows*columns)+0.01);

		for i = 0:rows-1
			for j = 1:columns
				switch ops(i*columns+j)
					case(1)
						answer(i*columns+j) = X(i*columns+j)*Y(i*columns+j);
						fprintf('%d %c %d=____    ',X(i*columns+j),operators(ops(i*columns+j)),Y(i*columns+j));
					case(2)
						answer(i*columns+j) = X(i*columns+j)*Y(i*columns+j);
						fprintf('%d %c %d=____    ',answer(i*columns+j),operators(ops(i*columns+j)),Y(i*columns+j));
					case(3)
						answer(i*columns+j) = X_add(i*columns+j)+Y_add(i*columns+j);
						fprintf('%d %c %d=____    ',X_add(i*columns+j),operators(ops(i*columns+j)),Y_add(i*columns+j));
					case(4)
						answer(i*columns+j) = X_add(i*columns+j)-Y_add(i*columns+j);
						fprintf('%d %c %d=____    ',X_add(i*columns+j),operators(ops(i*columns+j)),Y_add(i*columns+j));
				endswitch
			end
			fprintf('\n\n\n')
		end

		fprintf('\n\n\n\n\n')

		for i = 0:rows-1
			for j = 1:columns
				switch ops(i*columns+j)
					case(1)
						fprintf('%d %c %d= %d    ',X(i*columns+j),operators(ops(i*columns+j)),Y(i*columns+j),answer(i*columns+j));
					case(2)
						fprintf('%d %c %d= %d    ',answer(i*columns+j),operators(ops(i*columns+j)),Y(i*columns+j),X(i*columns+j));
					case(3)
						fprintf('%d %c %d= %d    ',X_add(i*columns+j),operators(ops(i*columns+j)),Y_add(i*columns+j),answer(i*columns+j));
					case(4)
						fprintf('%d %c %d= %d    ',X_add(i*columns+j),operators(ops(i*columns+j)),Y_add(i*columns+j),answer(i*columns+j));
						
				endswitch
			end
			fprintf('\n\n\n')
		end
	
	endswitch

diary off