How would you take an int and make each diget into a array element?

For example:

```
int num = 12345;
int nums[4];
// how ever you enter numbers into the array
// would result in:
// nums[0] = 1
// nums[1] = 2
// and so on...
```

AspiringCoder
-2
Newbie Poster

How would you take an int and make each diget into a array element?

For example:

```
int num = 12345;
int nums[4];
// how ever you enter numbers into the array
// would result in:
// nums[0] = 1
// nums[1] = 2
// and so on...
```

Edited
by AspiringCoder because:
*
n/a *

Jump to PostUse mod % and division / operators. Since this is homework, sorry but I'm not going to say anything more about it until you post the code you have tried.

Jump to PostHere are some hints to get you started :

1) Given a number n, n mod 10, always results in the last digit of n. For example :

`//mod = % 12345 % 10 equals 5 101011 % 10 equals 1 9234 % 10 equals 4 …`

Jump to PostOne more hint: you will need to know 4th grade math (add, subtract, multiply, and divide). What firstperson posted (except for the mod operator) was nothing more than what a 4th grader would learn in most USA schools.

Ancient Dragon
5,243
Achieved Level 70
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Featured Poster

mrnutty
761
Senior Poster

Here are some hints to get you started :

1) Given a number n, n mod 10, always results in the last digit of n. For example :

```
//mod = %
12345 % 10 equals 5
101011 % 10 equals 1
9234 % 10 equals 4
1 % 10 equals 1
0 % 10 equals 0
```

Now you have that fact. Here is one more:

Given a number n > 9, n/10 removes the last digit of n. If n is a 1 digit number,

then the result is 0. For example :

```
123/10 equals 12 //removed 3
100/10 equals 10 //removed 0
5234/10 equals 523 //removed 4
1/10 equals 0 //removed 1
```

Now you can use those facts to get each digit of a number. For example :

```
define n equal to 104
n mod 10 equals 4 and save 4
let n = n / 10 //n now equals 10 , 4 was removed
n mod 10 equals 0 and save 0
let n = n / 10 //n now equals 1, 0 was removed
n mod 10 equals 1 and save 1
let n = n / 10 // n now equals 0
since n is 0 STOP;
//now the digits we saved, do stuff with them
```

All of that is assuming integer arithmetic.

Nick Evan
commented:
Brilliant...really.
-2

invisal
381
Search and Destroy

Learning programming is about solving problem not about asking for the exact answer.

firstPerson gave you a very big hint, now it is time for you to make effort to solve

this problem.

Good luck.

Ancient Dragon
5,243
Achieved Level 70
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Featured Poster

AspiringCoder
-2
Newbie Poster

Does mod mean the same as remainder?

Also, I have never taken a programming class before so please excuse my lapse's of knowlage.

oieronle
0
Newbie Poster

```
int num=12345,aux,i;
int nums[5];
aux=num;
for(i=4;i;i--)
{
nums[i]=aux%10;
aux/=10;
}
```

Edited
by kvprajapati because:
*
Added [code] tags. For easy readability, always wrap programming code within posts in [code] (code blocks). *

NathanOliver
429
Veteran Poster
Featured Poster

We are here to help people with there code not give them the code if they don't have any. Secondly if you are going to post code please use code tags. Third your loop wont work like you think it does. When i is 1 it gets decremented to zero and then the for loop evaluates i and comes up false because i is 0 so you never get the last digit.

oieronle
0
Newbie Poster

First of all, I'm sorry because of the revelation, and secondly, you are right, this code doesn't work propperly.

@AspiringCoder

don't copy the code, but try to understand and try to solve it. Good luck

Thanks

mrnutty
761
Senior Poster

Does mod mean the same as remainder?

Also, I have never taken a programming class before so please excuse my lapse's of knowlage.

Yes mod returns the remainder from the division of its operands. For example,

10 mod 2 equals 0 because 2*5 equals 10, with 0 remainder. Another example,

5 mod 2 equals 1 because 2 goes into 5, 2 times with 1 remainder. Work it out on paper first and you will learn it better.

AspiringCoder
-2
Newbie Poster

Ok, thanks alot. Now I got it.

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