Add two different integers together

Question

Currently I am having a speed bump with adding two different integers. For example

int i = 32;
int j = 50;
/* Add i and j together into 3250 */

What I thought was changing the integers into strings and add them together but that takes too much effort. Is there any other way?

This is not "adding" .... and then, is `100*i + j` too obvious or is there something missing to your question? — , Oct 02 '17 at 07:49
Are you saying 3250 is desired result? I guess you need to multiply i by an appropriate factor of 10, if you don't want to convert them to strings. — Paul, Oct 02 '17 at 07:49

xenteros · Answer 1 · 2017-10-02T07:54:44.687

0

The solution in the decimal system is:

int result = 100* i + j;

In case this should be generic you'll need the following algorithm:

int shift = 10;
while(j >= shift) {
    pow *= 10;
}
int result = i * pow + j;

edited Oct 02 '17 at 07:54

answered Oct 02 '17 at 07:49

xenteros

I am not in to c but in C# I would convert into string and concat. Is this valid in c? – apomene Oct 02 '17 at 07:56
1

@apomene the code would be much more complicated :) – xenteros Oct 02 '17 at 07:57
ok, thanks for the feedback!! – apomene Oct 02 '17 at 07:57
@apomene there is no string in C - we interpret char array ending with (char)0 as string :) – xenteros Oct 02 '17 at 07:58

1 Answers1