Cpp_study/HugeInteger_main.cpp at master · ImTurtle35/Cpp_study · GitHub

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// 12191706 ±èÁ¤Áø
// Chapter 9 - 9.14
// driver program to test the functionality of the HugeInteger class.
#include <iostream>
#include <string>
#include "HugeInteger.h"

using namespace std;

// prototype of functions
void displayZero(const string&, HugeInteger&);
void displayRelationship(const string&, const string&, HugeInteger&, HugeInteger&);

int main() {
	// Default HugeInteger
	HugeInteger H0;
	cout << "Default HugeInteger H0 has been created.\n";
	cout << "HugeInteger H0 : ";
	H0.output();
	displayZero("H0", H0);
	cout << "\n";

	// HugeInteger H1
	int h1[40];
	HugeInteger H1;
	cout << "HugeInteger H1 has been created.\nEnter 40 one-digit integers for each digit of a 40-digit integer.\n: ";
	for (int i{ 0 }; i < 40; i++) {
		cin >> h1[i];
	}
	H1.input(h1);
	cout << "HugeInteger H1 : ";
	H1.output();
	displayZero("H1", H1);
	displayRelationship("H1", "H0", H1, H0);
	cout << "\n";

	// HugeInteger H2
	int h2[40];
	HugeInteger H2;
	cout << "HugeInteger H1 has been created.\nEnter 40 one-digit integers for each digit of a 40-digit integer.\n: ";
	for (int i{ 0 }; i < 40; i++) {
		cin >> h2[i];
	}
	H2.input(h2);
	cout << "HugeInteger H2 : ";
	H2.output();
	displayZero("H1", H1);
	displayRelationship("H1", "H2", H1, H2);
	cout << "\n";

	// Add and Subtract H1 and H2;
	cout << "Add H1 and H2 : ";
	(H1.add(H2)).output();
	cout << "Subtract H1 and H2 : ";
	(H1.subtract(H2)).output();
}

// distinguish hugeinteger is zero or not and display it.
void displayZero(const string& message, HugeInteger& huge) {
	if (huge.isZero())
		cout << message << " = 0.\n";
	else
		cout << message << " != 0.\n";
}

// distinguish relationship about two hugeintegers and display it.
void displayRelationship(const string& message, const string& message2, HugeInteger& huge, HugeInteger& other) {
	if (huge.isEqualTo(other)) {
		cout << message << " == " << message2 << ".\n";
	}
	if (huge.isNotEqualTo(other)) {
		cout << message << " != " << message2 << ".\n";
	}
	if (huge.isGreaterThan(other))
		cout << message << " > " << message2 << ".\n";
	if (huge.isLessThan(other))
		cout << message << " < " << message2 << ".\n";
	if (huge.isGreaterThanOrEqualTo(other))
		cout << message << " >= " << message2 << ".\n";
	if (huge.isLessThanOrEqualTo(other))
		cout << message << " <= " << message2 << ".\n";
}

/* h1's testcase:
   1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4
   h2's testcase:
   9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 9 8 7 6
*/