Debugging question

Hi guys, im kinda new here, so if i make a newbi mistake please go easy on me.

Well Im trying to make a program that will convert binary to decimal. (I know there are thousands of these post already, but i still couldnt find the answers to my question .


question # 1:
How can i pervent people from entering numbers other than 1's and 0's ?

question #2:
For some reason when I enter the binary, Im only able to enter 5 digits or less, or else my program wront work.
For e.g. i enter 11011 :: the output will be 27
But when i enter 111101 :: the output will be 0

Code:

#include <stdio.h>
#include <conio.h>

int array[1000];
int getbinary(int binary);

main()
{
	int temp;
	int binary;
	int power;
	int decimal;
	int cell;
	cell = 0;
	power = 1;
	decimal = 0;
	binary = getbinary(binary);

	do{
		temp = binary % 2;
		if (temp==1)
		{
			array[cell] = power;
		}
		else
		{
			array[cell] = 0;
		}
		cell++;
		power = power * 2;
		binary = binary * .1;
	} while(binary > 0);
	for (cell=cell; cell>=0; cell--)
	{
		decimal = array[cell] + decimal;
	}
	printf("%d decimal\n", decimal);
	getch();
}

int getbinary(int binary)
{
	printf("Please enter binary: ");
	scanf("%d", &binary);
	return binary;
}

Thx!!

answ to 1 (i Think. I am a newbie too.. so )

Code:

int num;
scanf("%d", &num);
while((num != 0) || (num !=1)){
  printf("\n please print  0 or 1 :");
  scanf("%d",&num);
}

try this...

your binary is my num

please use

Code:

 ....

thnks

to swagatob : hehe, where do i put that code?? I try to put it in the getbinary functions, but when I run it, the program will just keep on asking me to enter please print 0 or 1 no matter wut i enter.

Code:

while((num != 0) && (num !=1)){
  printf("\n please print  0 or 1 :");
  scanf("%d",&num);
}

as you can see that I am a newbee too

EDIT: while loop changed.. it possibly should be and not or

for 2 maybe use long rather than int... I am not sure though.....

thx swagatob, i think i almost got it to work

edit:

oops, lol i dont know wut happen but it dont work again.
ill follow ur direction again swagatob, and im not sure is this wut u wanted me to do?

Code:

#include <stdio.h>
#include <conio.h>

int array[1000];
int getbinary(int binary);

main()
{
	int temp;
	int binary;
	int power;
	int decimal;
	int cell;
	cell = 0;
	power = 1;
	decimal = 0;
	binary = getbinary(binary);

	do{
		temp = binary % 2;
		if (temp==1)
		{
			array[cell] = power;
		}
		else
		{
			array[cell] = 0;
		}
		cell++;
		power = power * 2;
		binary = binary * .1;
	} while(binary > 0);
	for (cell=cell; cell>=0; cell--)
	{
		decimal = array[cell] + decimal;
	}
	printf("%d decimal\n", decimal);
	getch();
}

int getbinary(int binary)
{
	printf("Please enter binary: ");
	scanf("%d", &binary);
	while((binary != 0) && (binary != 1))
	{
		printf("Please enter binary 0's or 1's: ");
		scanf("%d", &binary);
	}
	return binary;
}

hi
any more suggestion?
ary would be appeciated

suggestion for
swagatob:

use your edit button instead of posting new ones