Hi, it's been awhile since I've been here and the site has changed quite a bit, I like it. Anyway, I attempted to make a basic calculator program, but I'm getting some weird error messages. The error messages tell me that there are syntax errors, but I've looked through the code and I can't find any. Here is the code, and below that are the error messages:
/*
* BCalc:
* A calculator program with add, subtract, multiply, and divide functions.
*
* Programmer:
*/
#include <iostream>
using namespace std;
float number = 0;
int get_choice(int &choice);
void handle_choice(int choice);
float add_num(float number);
float subtract_num(float number);
float multiply_num(float number);
float divide_num(float number);
int main()
{
int choice;
while(get_choice(choice)); //while get_choice returns 1 call handle_choice function.
{
handle_choice(choice);
}
return 0; //end of program
}
int get_choice(int &choice)
{
do
{
cout << "Select operation: \n";
cout << "1 ~ addition.\n";
cout << "2 ~ subtraction.\n";
cout << "3 ~ multiplication.\n";
cout << "4 ~ division.\n";
cout << "5 ~ clear\n";
cout << "6 ~ exit program.\n";
cin >> choice;
if ((choice < 7 ) || (choice > 0))
{
cout << "invalid entry." << endl;
}
if (choice == 6) //if choice equals 6 exit return 0 and exit program
{
return 0;
}
}while((choice < 7) || (choice > 0));
return 1;
}
void handle_choice(int choice)
{
switch(choice)
{
case 1:
number = add_num(number); //assign value returned by function to global variable number
break;
case 2:
number = subtract_num(number);
break;
case 3:
number = multiply_num(number);
break;
case 4:
number = divide_num(number);
break;
case 5:
number = 0; //if 5 is entered set number variable to 0
break;
default:
cout << "invalid entry" << endl;
break;
}
}
float add_num(float number)
{
float i = 0;
float j = 0;
char return_main = 'C';
do
{
if(number == 0) //if number is 0 prompt user for two numbers to add.
{
cout << "enter first number to add ";
cin >> i;
cout << "Enter second number to add ";
cin >> j;
number = i + j;
cout << number;
}
else //if number is not 0 prompt user for the number to be added
{
cout << "Enter number to add ";
cin >> i;
number += i;
cout << number;
}
cout << "enter R to return, C to continue addition ";
cin >> return_main;
}while(return_main != 'r'); //while return_main is not r loop through the function.
return (number); //when return_main is r return the sum.
}
float subtract_num(float number)
{
float i, j;
char return_main;
do
{
if(number == 0)
{
cout << "Enter number to subtract from ";
cin >> i;
cout << "Enter amount to subtract ";
cin >> j;
number = i - j;
cout << number;
}
else
{
cout << "Enter amount to subtract ";
cin >> i;
number -= i;
cout << number;
}
cout << "Enter R to return, C to continue subtraction ";
cin >> return_main;
}while(return_main != 'r');
return (number);
}
float multiply_num(float number)
{
float i, j;
char return_main;
if(number == 0)
{
cout << "Enter number to multiply ";
cin >> i;
cout << " times ";
cin >> j;
number = i * j;
cout << number;
}
else
{
cout << number << " times ";
cin >> i;
number *= i;
cout << number << endl;
}
cout << "Enter R to return to main menu\n";
cin >> return_main;
}while(return_main != 'r');
return (number);
}
float divide_num(float number)
{
float i, j;
char return_main;
do
{
if(number == 0)
{
cout << "Enter number to be divided ";
cin >> i;
cout << "divided by ";
cin >> j;
number = i / j;
cout << number;
}
else
{
cout << number << " divided by ";
cin >> i;
number /= i;
cout << number << endl;
}
cout << "Enter r to return, c to continue ";
cin >> return_main;
}while(return_main != 'r');
return (number);
}BCalc.cpp
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(184) : error C2143: syntax error : missing ';' before 'while'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(186) : error C2143: syntax error : missing ';' before 'return'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(187) : error C2143: syntax error : missing ';' before '}'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(187) : error C2143: syntax error : missing ';' before '}'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(187) : error C2143: syntax error : missing ';' before '}'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(191) : error C2143: syntax error : missing ';' before '{'
C:\Program Files\Microsoft Visual Studio\VC98\BCalc.cpp(191) : error C2447: missing function header (old-style formal list?)
Error executing cl.exe.