C program Help!

[[Student]]

how to put space in a one variable.......

like this!....pls help!

int num;

num=%d

Enter a number (<=3000): 2968

You have entered:
2
9
6
8
2 + 9 + 6 + 8 = 25
25 is an ODD number

and 2968 is whole num of %d!....how to do it spacing a thousand number in a vertical line!.....

[Adak]

Use the base number (10 in our case), and the modulus operator, to help:

2968 % 10 (our base number) equals 8 
2968 /  10 equals 
296

296 % 10 equals 6
296 / 10 equals
29

See how that can "peel off" the right most digit of the number, step by step?

a while loop is helpful:
int i=0, count=0
int digits[5]={0}

while(number > 0) {
  digits[i++]=number % 10
  number /= 10
  count++;
}

Now the digits are in the digits[] array. To see them right, print it out from i=count to 0, instead of the normal way. (that is, counting downward from digits[count] to digits[0], in a for loop.

[hellork]

You could also read the number in as a string of characters. Limit input to some arbitrary size and then store them somewhere convenient, like a slightly larger array of char. Then loop through and print each one. Doing calculations on char is like working with int, but you will have to subtract '0' to get the value.