#include #include using namespace std; int main() { //Output graph paper. cout << "How many rows of boxes (e.g., 10)? "; int nrows {0}; cin >> nrows; if (!cin) { cerr << "Sorry, that wasn't a number.\n"; return EXIT_FAILURE; } cout << "How many columns of boxes (e.g., 10)? "; int ncols {0}; cin >> ncols; if (!cin) { cerr << "Sorry, that wasn't a number.\n"; return EXIT_FAILURE; } cout << "How many rows of blanks in each box (e.g., 1)?\n"; int brows {0}; cin >> brows; if (!cin) { cerr << "Sorry, that wasn't a number.\n"; return EXIT_FAILURE; } cout <<"How many columns of blanks in each box (e.g., 2)?\n"; int bcols {0}; cin >> bcols; if (!cin) { cerr << "Sorry, that wasn't a number.\n"; return EXIT_FAILURE; } for (int r {0}; r < nrows; ++r) { for (int c {0}; c < ncols; ++c) { cout << "+"; for (int b {0}; b < bcols; ++b) { cout << "-"; } } cout << "\n"; for (int y {0}; y < brows; y++) { for (int c {0}; c < ncols; ++c) { cout << "|"; for (int b {0}; b < bcols; ++b) { cout << " "; } } cout << "\n"; } } return EXIT_SUCCESS; }