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cannot divide by zero c++

Posted on 2011-09-23
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Last Modified: 2012-05-12
Hello i'm trying to get my program to work correctly.. the program is very simple all it does is caculate various basic math operations.. i have posted what it is suppose to do
Please enter two integer values separated by whitespace: 5 2
Here are the results:
5 plus 2 equals 7
5 minus 2 equals 3
5 multiplied by 2 equals 10
5 divided by 2 equals 2 with a remainder of 1
But with the second operand having a value of zero, we should see the following:

Please enter two integer values separated by whitespace: 5 0
Here are the results:
5 plus 0 equals 5
5 minus 0 equals 5
5 multiplied by 0 equals 0
Division by zero is undefined...

although my code something is wrong and still passing the zero to the function even though it's suppose to say "Division by zero is undefined..."  i have posted my code below..

#include <iostream>
using namespace std;
void CalcIntResults(int value1, int value2,  int &addition_total, int &minus_total, int &mulplication, int &division, int &reminder);

int main(void)
{
	int number1;
	int number2;

	int addition;
	int minus;
	int mulplication;
	int division;
	int reminder;

cout <<"Please enter two integer values seperated by whitespace: ";
cin >> number1 >>number2;
CalcIntResults(number1, number2, addition, minus, mulplication, division, reminder);

cout <<number1 <<" plus " <<number2 <<" equals " <<addition <<endl;
cout <<number1 <<" minus "<<number2 <<" equal " <<minus <<endl;
cout <<number1 <<" multiplied " <<number2 <<" equals " <<mulplication <<endl;

if(number2!=0)
{
cout <<number1 <<" divided " <<number2 <<" equals " <<division;
}

else 

{
	cout <<"Division by zero is undefined";
}


if((number1 % number2)!=0)
{
	cout <<" reminder of " << reminder;

}
else 
{
	cout <<" no reminder";
}


}
void CalcIntResults(int value1, int value2, int &addition_total, int &minus_total, int &mulplication, int &division, int &reminder)
{
	addition_total = value1+value2;
	minus_total= value1-value2;
	mulplication= value1*value2;

	if(value2 !=0)
	{
		division = value1/value2;
	}
	else
	{
		cout <<"Division by zero is undefined";
	}
	

}

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Question by:businessesatoz
  • 5
6 Comments
 
LVL 13

Expert Comment

by:themrrobert
ID: 36589008
try changing line 24 to this:

if(number2!='0')
0
 
LVL 13

Expert Comment

by:themrrobert
ID: 36589018
if that doesnt work (which it probably will) try this:

if(number2!="0")

the operators in c++ are extermely sensitive, and a char or string (as returned from stding) will not be cast to an int unless explicitly specified. another thing to try is

if(int<number2>!=0)

/\ this is probably best solution
0
 
LVL 13

Expert Comment

by:themrrobert
ID: 36589029
I see that you are casting it to an int, i'm going to pull out my compiler and check it out

(try my solution just for fun, it may work :) )
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LVL 13

Accepted Solution

by:
themrrobert earned 500 total points
ID: 36589049
I found the problem: use this code


Problem solved B)
if(number2!=0)
{
cout <<number1 <<" divided " <<number2 <<" equals " <<division;
if((number1 % number2)!=0)
{
	cout <<" reminder of " << reminder;

}
else 
{
	cout <<" no reminder";
}
}

else 

{
	cout <<"Division by zero is undefined";
}

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0
 
LVL 13

Expert Comment

by:themrrobert
ID: 36589074
Complete code, just to make it easier: (sorry for spamming, my brain is on overload right now )
#include <iostream>
using namespace std;
void CalcIntResults(int value1, int value2,  int &addition_total, int &minus_total, int &mulplication, int &division, int &reminder);

int main(void)
{
	int number1;
	int number2;

	int addition;
	int minus;
	int mulplication;
	int division;
	int reminder;

cout <<"Please enter two integer values seperated by whitespace: ";
cin >> number1 >>number2;
CalcIntResults(number1, number2, addition, minus, mulplication, division, reminder);

cout <<number1 <<" plus " <<number2 <<" equals " <<addition <<endl;
cout <<number1 <<" minus "<<number2 <<" equal " <<minus <<endl;
cout <<number1 <<" multiplied " <<number2 <<" equals " <<mulplication <<endl;

if(number2!=0)
{
	cout <<number1 <<" divided " <<number2 <<" equals " <<division;
	if((number1 % number2)!=0)
	{
		cout <<" reminder of " << reminder;

	}
	else 
	{
		cout <<" no reminder";
	}
}

else 

{
	cout <<"Division by zero is undefined";
}


}
void CalcIntResults(int value1, int value2, int &addition_total, int &minus_total, int &mulplication, int &division, int &reminder)
{
	addition_total = value1+value2;
	minus_total= value1-value2;
	mulplication= value1*value2;

	if(value2 !=0)
	{
		division = value1/value2;
	}
	else
	{
		cout <<"Division by zero is undefined";
	}
	

}

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0
 

Author Closing Comment

by:businessesatoz
ID: 36589105
thanks i was very close this one was a bit tricky... thanks !!!!
0

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