zadanka

//zadanie 1
#include "std_lib_facilities.hpp"
int main()
{
    string s = "Goodbye, cruel world! ";
    cout << s << '\n';
}

//zadanie 2
#include "std_lib_facilities.hpp"
int main()
{
    int mile;
    cout << "Podaj ilość mil:";
    cin >> mile;
    cout << mile << " mila/mil/mile to " << mile*1.609 << "kilometrów.";
}

// zadanie 3: Wykonać "Exercise 4 oraz 5" ze strony 86 w książce.
// 4. Write a program that prompts the user to enter two integer values. Store
// these values in int variables named val1 and val2. Write your program to
// determine the smaller, larger, sum, difference, product, and ratio of these
// values and report them to the user.
// 5. Modify the program above to ask the user to enter floating-point values
// and store them in double variables. Compare the outputs of the two pro-
// grams for some inputs of your choice. Are the results the same? Should
// they be? What’s the difference?

#include "std_lib_facilities.hpp"

int main()
{
    int val1;
    int val2;

    cin>>val1;
    cin>>val2;

    if (val1 > val2) cout << val1 << " > " << val2;
    else cout << val1 << " < " << val2 << "\n";


    cout << val1 << " + " << val2 << " = " << val1+val2 << "\n";
    cout << val1 << " - " << val2 << " = " << val1-val2 << "\n";
    cout << val1 << " * " << val2 << " = " << val1*val2 << "\n";
    cout << val1 << " / " << val2 << " = " << val1/val2 << "\n";
    }

int main()
{
    double val1;
    double val2;

    cin>>val1;
    cin>>val2;

    if (val1 > val2) cout << val1 << " > " << val2;
    else cout << val1 << " < " << val2 << "\n";


    cout << val1 << " + " << val2 << " = " << val1+val2 << "\n";
    cout << val1 << " - " << val2 << " = " << val1-val2 << "\n";
    cout << val1 << " * " << val2 << " = " << val1*val2 << "\n";
    cout << val1 << " / " << val2 << " = " << val1/val2 << "\n";
    }

// zadanie 5: Wykonać "Exercise 10" ze strony 86 w książce.
// Write a program that takes an operation followed by two operands and
// outputs the result. For example:
// + 100 3.14
// * 4 5
// Read the operation into a string called operation and use an
// if-statement to figure out which operation the user wants, for example,
// if (operation=="+"). Read the operands into variables of type double.
// Implement this for operations called +, –, *, /, plus, minus, mul, and div
// with their obvious meanings.

#include "std_lib_facilities.hpp"

int main()
{
	string operation;
	double val1{0},val2{0};
	cin >> operation >> val1 >> val2;
	if(operation == "+") {
		cout << val1+val2 << "\n";
	}
	if(operation == "-") {
		cout << val1-val2 << "\n";
	}
	if(operation == "*") {
		cout << val1*val2 << "\n";
	}
	if(operation == "/") {
		cout << val1/val2 << "\n";
	}
    if(operation == "plus") {
		cout << val1+val2 << "\n";
	}
	if(operation == "minus") {
		cout << val1-val2 << "\n";
	}
	if(operation == "mul") {
		cout << val1*val2 << "\n";
	}
	if(operation == "div") {
		cout << val1/val2 << "\n";
	}
	cout << "end\n";
}