// // PythagoreanTriples can be used to test if a couple of hole Numner can form a Pythagorean triple. // // Created by Ronen Gil on 11/10/2018. // #include #include #include using namespace std; int main(int argc, const char * argv[]) { unsigned long int a, b, c, i; float y; string input = " "; bool flag = false; cout << "A Pythagorean Triple is a combination of three hole positive Numbers that can be formed as:" << endl; cout << "a^2 + b^2 = c^2. For exapmle: 3^2 + 4^2 = 5^2 (9 + 16 = 25)." << endl; cout << "You can find more info at: https://en.wikipedia.org/wiki/Pythagorean_triple" << endl; cout << "You can use this program to test if a couple of hole positive Numbers can form a Pythagorean Triple." << endl << endl; while (!flag || input == "0") // Let's make sure we have an integer greater then 0. { cout << "Enter a hole number between 1 and 99:" << endl; cin >> input; switch (input[0]) { // The first character. case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': flag = true; break; default: flag = false; break; } for (i = 1; i < input.size(); i++) // a loop to iterate the hole input. { if (flag) // Only if the characters before are all digits { switch (input[i]) { // The rest of the input. case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': flag = true; break; default: flag = false; break; } } } if (!flag || input == "0") // there is a character in the input that is not a digit, or the input is "0". { cout << endl << input << " is NOT a hole number between 1 and 99!" << endl; } } a = stoul(input); // We have an integer. flag = false; input = " "; while (!flag || input == "0") // Let's make sure we have an integer greater then 0. { cout << "Enter a second hole number between 1 and 99:" << endl; cin >> input; switch (input[0]) { // The first character. case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': flag = true; break; default: flag = false; break; } for (i = 1; i < input.size(); i++) // a loop to iterate the hole input. { if (flag) // Only if the characters before are all digits { switch (input[i]) { // The rest of the input. case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': flag = true; break; default: flag = false; break; } } } if (!flag || input == "0") // there is a character in the input that is not a digit, or the input is "0". { cout << endl << input << " is NOT a hole number between 1 and 99!" << endl; } } b = stoul(input); // We have an integer. y = sqrt(pow(a, 2) + pow(b, 2)); c = round(y); if (y == c) { cout << a << ", " << b << " and " << c << " is a valid Pythagorean Triple." << endl; } else { cout << a << " and " << b << " can NOT form a valid Pythagorean Triple." << endl; } return 0; }

Pythagorean Triples.cpp