// Generating multiplication tables using nested loops

// In this version an indefinite for loop is used, in combination with break statements.

import <iostream>;

import <format>;

#include <cctype> // for std::tolower()

int main()

{

size_t table {}; // Table size

const size_t table_min {2}; // Minimum table size - at least up to the 2-times

const size_t table_max {12}; // Maximum table size

char reply {}; // Response to prompt

const size_t max_tries{ 3 }; // Max. number of times a user can try entering a table size

do

{

for (size_t count{ 1 }; ; ++count) // Indefinite loop

{

std::cout <<

std::format("What size table would you like ({} to {})? ", table_min, table_max);

std::cin >> table; // Get the table size

// Make sure table size is within the limits

if (table >= table_min && table <= table_max)

{

break; // Exit the input loop

}

else if (count < max_tries)

{

std::cout << "Invalid input - try again.\n";

}

else

{

std::cout << "Invalid table size entered - yet again!\nSorry, only "

<< max_tries << " allowed - program terminated." << std::endl;

return 1;

}

}

// Create the top line of the table

std::cout << std::format("{:>6}", '|');

for (size_t i {1}; i <= table; ++i)

{

std::cout << std::format(" {:3} |", i);

}

std::cout << std::endl;

// Create the separator row

for (size_t i {}; i <= table; ++i)

{

std::cout << "------";

}

std::cout << std::endl;

for (size_t i {1}; i <= table; ++i)

{ // Iterate over rows

std::cout << std::format(" {:3} |", i); // Start the row

// Output the values in a row

for (size_t j {1}; j <= table; ++j)

{

std::cout << std::format(" {:3} |", i*j); // For each column

}

std::cout << std::endl; // End the row

}

// Check if another table is required

std::cout << "\nDo you want another table (y or n)? ";

std::cin >> reply;

} while (std::tolower(reply) == 'y');

}