#include <iostream>
#include <cstdlib>
using namespace std;

//Function declarations.
void graphPaper(int nrows, int ncols, int nrowsb, int ncolsb);
void line(int ncols, int ncolsb, char c1, char c2);

int main()
{
	//Output four sheets of customized graph paper.
	graphPaper(10, 10, 1, 4);
	cout << "\n";
	graphPaper(5, 5, 2, 6);
	cout << "\n";
	graphPaper(1, 1, 4, 10);   //one big box
	cout << "\n";
	graphPaper(10, 10, 1, 1);  //Each box contains just 1 blank.
	return EXIT_SUCCESS;
}

//Output graph paper with the given number of rows and columns of boxes.
//Each box will contain nrowsb and ncolsb of blanks.

void graphPaper(int nrows, int ncols, int nrowsb, int ncolsb)
{
	for (int r {0}; r < nrows; ++r) {
		line(ncols, ncolsb, '+', '-');  //Single quotes around a char.

		for (int rb {0}; rb < nrowsb;  ++rb) {
			line(ncols, ncolsb, '|', ' ');
		}
	}

	line(ncols, ncolsb, '+', '-');
}

//Output one line of the graph paper, made of the characters c1 and c2.
//These characters could be '+' and '-', or they could be '|' and ' '.

void line(int ncols, int ncolsb, char c1, char c2)
{
	for (int c {0}; c < ncols; ++c) {
		//Output c1, followed by ncolsb copies of c2.
		cout << c1;
		for (int cb {0}; cb < ncolsb; ++cb) {
			cout << c2;
		}
	}

	cout << c1;   //Output one final c1 at the end of the line.
	cout << "\n";
}