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how to write a program to get next odd number memory (limit 400 bytes)

P: 4
i tried this code but it is more than 400 bytes

int main()
int x[4],i;
scanf("%d",&x[i]);//to get all numbers from user
if(x[i]%2==0)//to get the next odd number
printf("%d\n",x[i]);//to print odd numbers
return 0;
Aug 26 '10 #1
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10 Replies

P: 687
It's 280 bytes even with comments.
Aug 26 '10 #2

P: 4
and if the memory limit (100 bytes) how can i solve this problem???
please help me!!!
Aug 26 '10 #3

P: 687
Can you describe the problem somewhat more detailed than "get next odd number memory" ? At least what user is expected to enter and what is supposed to be output.
Aug 27 '10 #4

P: 4
Given an integer 1 <= N <= 10000,you have to print the next odd number.

The input file consists of series of numbers one in each line.The input is terminated by EOF.

The next odd number.



Take care about your fingers, do not use more than 100 bytes of code
Aug 27 '10 #5

P: 4
this is the problem and i hope that you help me solve it
Aug 27 '10 #6

Expert 2.5K+
P: 3,112
OK, well here are some tips about saving space:
1. The 3 loops could be merged, doing all of the task in just one loop.
2. Instead of that if-clause, you could use shorter syntax. Let me give you an example:
Expand|Select|Wrap|Line Numbers
  1. int a = 3;
  2. int b = a<10 ? 1 : 2; // this means: if a<10 is true, then the expression in brackets will result in 1, otherwise in 2
So, if you adapt that, you can save some space.

Oh, and the tasks tells you that the series of numbers is terminated by EOF, not that you have exactly 4 numbers. So read them in one by one and operate on them or take them as arguments for the program.

One more thing: If I enter 3, should it give me 3 (which is an odd number) or 5 (which is the next highest odd number)?

Aug 27 '10 #7

Expert Mod 5K+
P: 9,197
Maybe I'm missing something, but printing out the odd numbers is:

Expand|Select|Wrap|Line Numbers
  1. printf("%d", x[i]);
where (x[i] % 2) != 0.

Put this in a loop controlled by i and you are done.
Aug 27 '10 #8

Expert 100+
P: 2,400
Are negative numbers allowed in the input file?
What is the next odd number for -5 (is it -3 or -7)?
Aug 30 '10 #9

P: 1,059
try this
Expand|Select|Wrap|Line Numbers
  1. next_odd=current_numb+(current_numb%2)+1;
It will always give you the next odd number.....
Aug 30 '10 #10

Expert 100+
P: 2,400
Prior to C99, the behavior of the "%" operator was implementation-dependent when either operand was negative. A portable solution ought to work around this limitation (or negative values ought to be trapped).
Aug 30 '10 #11

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