I need to add and multiply in the same application but the outcome isnt right

Question

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int num01;
int num02;
int num03;

Console.Write("Type your first number: ");
num01 = Convert.ToDouble(Console.ReadLine());
Console.Write("Type a number to be added to: ");
num02 = Convert.ToDouble(Console.ReadLine());
Console.Write("Type a number to be multipied by: ");
num03 = Convert.ToDouble(Console.ReadLine());

Console.WriteLine("The result is " + num01 + num02 * num03);
Console.ReadKey();

What I have tried:

int result = (num01 + num02) * num03;
string strResult = "The result is " + result;

Console.WriteLine(strResult);
Console.ReadKey();

put the first formula in brackets.

Also used .ToInt32 instead of .ToDouble

Thanks to Jochen

Posted 22-Mar-16 0:51am

Member 12409152

Updated 22-Mar-16 2:01am

v3

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Comments

Richard MacCutchan 22-Mar-16 6:57am

What do you mean "the outcome isn't right"? What answer do you get, and what do you expect? Do you understand operator precedence?

Member 12409152 22-Mar-16 7:36am

the numbers get added onto each other

num01 = 5
num02 = 7
num03 = 1

and the outcome i get is 571

2 solutions

Solution 1

You should try

C#

Console.WriteLine("The result is " + (num01 + num02 * num03));

Quote:
searches on google, youtube but cant find any explantion about multiple operators.

The problem is that + don't do what you expect when there is a string.
You should study documentation of your language. This behavior may vary depending on language.

Posted 22-Mar-16 1:08am

Patrice T

Updated 22-Mar-16 1:11am

v2

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Jochen Arndt · Accepted Answer · 2016-03-22T01:09:00

You have to peform the mathematical operation in it's own statement and not inside the WriteLine() call where it is treated differently. So you might split the operations:

C#

// Perform the mathematical operation
int result = num01 + num02 * num03;
// Create the result string
string strResult = "The result is " + result;
// Print the result string
Console.WriteLine(strResult);

Also you are using Convert.ToDouble() to convert the input but assigning to int. So use Convert.ToInt32() or define the variables as double.