cpa_lab_4_2_7_(1)-A.cpp

#include <iostream>
#include<math.h>

using namespace std;

bool is_close(double a, double b, double tolerance){
    return (fabs(a-b) < tolerance);
}

int main(void) {
    if (0.3 == 3 * 0.1) {
        cout << "The numbers are equal";
    } else {
        cout << "The numbers are not equal";
    }
    cout << endl;

    if (is_close(0.3, 3 * 0.1, 0.00000001)) {
        cout << "The numbers are close enough";
    } else {
        cout << "The numbers are not close enough";
    }
    cout << endl;

    // this should work regardless of the argument order
    if (is_close(3 * 0.1, 0.3, 0.00000001)) {
        cout << "The numbers are still close enough";
    } else {
        cout << "The numbers are not close enough";
    }
    cout << endl;

    if (is_close(3 * 0.1, 0.31, 0.00000001)) {
        cout << "The numbers are still close enough";
    } else {
        cout << "The numbers are not close enough";
    }
    cout <<endl;
    return 0;
}