turbo c++ error during doing sum

Question

1.00/5 (2 votes)

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the following code is given here:

C++

#include<iostream.h>
#include<conio.h>
void main()
{
   int number1,num2,res;
   clrscr();
   cout<<"enter num1";
   cin>>number1;
   cout<<"enter num2";
   cin>>num2;
   cout<<"sum is:"<<res;
   getch();
   }

When I entered the 2 values of number1,num1=2,4
this display the result = 1562.

Posted 17-Aug-13 7:16am

tusharkaushik

Updated 17-Aug-13 7:24am

André Kraak

v2

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3 solutions

Solution 2

If you set the value of your res variable nowhere then it will be filled up with garbage, a random value.

Posted 17-Aug-13 7:21am

pasztorpisti

Comments

H.Brydon 18-Aug-13 23:02pm

Probably the easiest +5 you've ever received... :-)

pasztorpisti 19-Aug-13 3:44am

Thank you! To be honest I feel ashamed of answering this question, unfortunately I was quite bored... :-)

Solution 3

res = number1 + num2 //Missing
Garbage value is stored in uninitialized variables.

Posted 17-Aug-13 7:41am

Member 9834754

v2

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Ron Beyer · Accepted Answer · 2013-08-17T07:18:00

Where are you actually doing the sum?

Because you declare the variables, but don't initialize them, they hold random data (whatever was left in those addresses before you acquired them).

You need to add them somewhere, res = number1 + num2;

Please get into the habit of initializing your variables when you declare them. This problem would be a lot easier (but it was easy to begin with) if you initialized them.

You may want to learn good debugging skills, learn to run through code by hand. A simple following of the code written out on paper would have immediately shown you where the problem was.