#include <iostream>
int main() {
// Problem 1: Print a rectangle of stars
for (int i = 0; i < 5; ++i) {
for (int j = 0; j < 10; ++j) {
std::cout << "* ";
}
std::cout << std::endl;
}
// Problem 2: Print a right-angled triangle of numbers
for (int i = 1; i <= 5; ++i) {
for (int j = 1; j <= i; ++j) {
std::cout << j << " ";
}
std::cout << std::endl;
}
// Problem 3: Print an inverted right-angled triangle of alphabets
for (char ch = 'E'; ch >= 'A'; --ch) {
for (char innerCh = 'A'; innerCh <= ch; ++innerCh) {
std::cout << innerCh << " ";
}
std::cout << std::endl;
}
// Problem 4: Print a hollow square of hashes
for (int i = 1; i <= 5; ++i) {
for (int j = 1; j <= 5; ++j) {
if (i == 1 || i == 5 || j == 1 || j == 5) {
std::cout << "# ";
} else {
std::cout << " ";
}
}
std::cout << std::endl;
}
return 0;
}