#include <iostream> using namespace std; char calcOper; void addition(); void subtraction(); void multiplication(); void division(); //I was instructed to create a calculator rogram with 4 subfunctions (add, sub, mult, div) //I must run this entire program through a loop that will execute until the user no longer desires to compute via the calculator. int main() { do{ cout << "Please enter a simple operator (Ex. +  * /): "; cin >> calcOper; if(calcOper == '+') addition(); else if(calcOper == '') subtraction(); else if(calcOper == '*') multiplication(); else if(calcOper == '/') division(); }while(); void addition(float a, float b, float total) { cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a + b; cout << "The sum is: " << total << endl; } void subtraction(float& a, float& b, float& total) { cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a  b; cout << "The difference is: " << total << endl; } void multiplication(float& a, float& b, float& total) { cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a * b; cout << "The product is: " << total << endl; } void division(float& a, float& b, float& total) { cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a / b; cout << "The quotient is: " << total << endl; }
How do I get my calculator to work?!
Page 1 of 14 Replies  254 Views  Last Post: 20 April 2013  01:03 AM
#1
How do I get my calculator to work?!
Posted 19 April 2013  06:30 PM
Replies To: How do I get my calculator to work?!
#2
Re: How do I get my calculator to work?!
Posted 19 April 2013  07:09 PM
Have you been told to write the functions the way you have?
I would have probably thought of reading a number, operator and number in the loop.
I would have probably thought of reading a number, operator and number in the loop.
#3
Re: How do I get my calculator to work?!
Posted 19 April 2013  07:17 PM
#define, on 19 April 2013  07:09 PM, said:
Have you been told to write the functions the way you have?
I would have probably thought of reading a number, operator and number in the loop.
I would have probably thought of reading a number, operator and number in the loop.
We have been instructed to use sub functions. The logic behind my code was to use if/else statements to decipher what mathematical operator will be used to calculate the two numbers that have been input.
#4
Re: How do I get my calculator to work?!
Posted 19 April 2013  07:38 PM
Your if statements are fine, they call the function associated with the operator. If you ask for the numbers as well you can pass the numbers to the subfunction which will perform the correct mathematical operation.
If you wish to run your code you don't need any parameters in you function.
Functions (I)
Are you getting any errors?
If you wish to run your code you don't need any parameters in you function.
29 void addition() 30 {
Functions (I)
Are you getting any errors?
#5
Re: How do I get my calculator to work?!
Posted 20 April 2013  01:03 AM
void addition(float a, float b, float total) { cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a + b; cout << "The sum is: " << total << endl; }
If you have declared your add function like this, you have to call it like this.
addition(firstArgumentToBePassed, secondArgumentToBePassed, etc, etc...);
As you call it now, you could just change you functions.
void addition() { int a, b, total = 0; cout << "Enter two integers (separated by a single space): "; cin >> a, b; total = a + b; cout << "The sum is: " << total << endl; }
Don't write "Enter two integers", and then use floats BTW.
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