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Calculator.cpp
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448 lines (421 loc) · 8.84 KB
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#include <iostream>
int nn;
char diff_ope;
char new_ope;
char plus_ope = '+';
char minus_ope = '-';
char division_ope = '/';
char times_ope = '*';
bool ope_bool;
bool nn_bool;
char uni_yes = 'y';
char uni_no = 'n';
void different_operator() {
std::cout << "Do you want a different operator connecting the current number to the last current number? If you want, type y, if not, type n, or if you want help, type any character besides y & n.\n";
std::cin >> diff_ope;
if (diff_ope == uni_yes)
{
std::cout << "\nEnter only the given operators - +, -, *, /.\n";
std::cin >> new_ope;
if (new_ope == plus_ope or new_ope == minus_ope or new_ope == times_ope or new_ope == division_ope)
{
ope_bool = true;
std::cout << "\n";
}
else
{
ope_bool = false;
std::cout << "\n";
}
}
else if (diff_ope == uni_no)
{
std::cout << "\n";
}
else
{
std::cout << " Example, n + n1 (+,-,*,/) n2 .\n";
std::cout << " ^ \n";
std::cout << "You can choose different operators connecting n1 to n2.\n";
std::cout << " This is the same with your numbers (entries).\n";
different_operator();
}
}
void entries() {
char question;
std::cout << "\nDo you want to enter another entry? If yes, enter y, if no, enter any character.\n";
std::cin >> question;
if (question == uni_yes)
{
nn_bool = true;
std::cout << "Enter next number: \n";
std::cin >> nn;
different_operator();
}
else
{
nn_bool = false;
std::cout << "\n";
}
}
void process() {
char op;
double num;
double num1;
double result;
std::cout << "\nEnter only the given operators - +, -, *, /.\n";
std::cin >> op;
std::cout << "\nNow then, please enter the first number.\n";
std::cin >> num;
std::cout << "Enter second number.\n";
std::cin >> num1;
entries();
switch(op)
{
case '+':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num + num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num + num1 / nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num + num1 * nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num + num1 + nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num + num1 + nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num + num1;
std::cout << "Result: " << result;
process();
}
break;
case '-':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '+':
result = num - num1 + nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num - num1 / nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num - num1 * nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num - num1 - nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num - num1 - nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num - num1;
std::cout << "Result: " << result;
process();
}
break;
case '*':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num * num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '+':
result = num * num1 + nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num * num1 / nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num * num1 * nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num * num1 * nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num * num1;
std::cout << "Result: " << result;
process();
}
break;
case '/':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num / num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num / num1 * nn;
std::cout << "Result: " << result;
process();
break;
case '+':
result = num / num1 + nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num / num1 / nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num / num1 / nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num / num1;
std::cout << "Result: " << result;
process();
}
break;
defult:
std::cout << "Error. Please enter different number and/or operator.";
process();
break;
}
}
int main() {
char op;
double num;
double num1;
double result;
std::cout << "Hello to calculator! You can only use the operators below.\n";
std::cout << "Enter only the given operators - +, -, *, /.\n";
std::cin >> op;
std::cout << "\nNow then, please enter the first number.\n";
std::cin >> num;
std::cout << "Enter second number.\n";
std::cin >> num1;
entries();
switch(op)
{
case '+':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num + num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num + num1 / nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num + num1 * nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num + num1 + nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num + num1 + nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num + num1;
std::cout << "Result: " << result;
process();
}
break;
case '-':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '+':
result = num - num1 + nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num - num1 / nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num - num1 * nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num - num1 - nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num - num1 - nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num - num1;
std::cout << "Result: " << result;
process();
}
break;
case '*':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num * num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '+':
result = num * num1 + nn;
std::cout << "Result: " << result;
process();
break;
case '/':
result = num * num1 / nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num * num1 * nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num * num1 * nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num * num1;
std::cout << "Result: " << result;
process();
}
break;
case '/':
if (ope_bool == true && nn_bool == true)
{
switch (new_ope)
{
case '-':
result = num / num1 - nn;
std::cout << "Result: " << result;
process();
break;
case '*':
result = num / num1 * nn;
std::cout << "Result: " << result;
process();
break;
case '+':
result = num / num1 + nn;
std::cout << "Result: " << result;
process();
break;
default:
result = num / num1 / nn;
std::cout << "Result: " << result;
process();
break;
}
}
else if (ope_bool == false && nn_bool == true)
{
result = num / num1 / nn;
std::cout << "Result: " << result;
process();
}
else
{
result = num / num1;
std::cout << "Result: " << result;
process();
}
break;
defult:
std::cout << "Error. Please enter different number and/or operator.";
process();
break;
}
}