convert.c

#include <stdio.h>
#include <stdlib.h>

#define One 1
#define  N 10 //number of elem in array "in"
#define Error_Of_Input -1 //if puted simbol wasn't NULL or 1
#define Error_in_ToInteger -2 //if puted simbol wasn't NULL or 1

size_t Pow10(size_t a, size_t n)
{
	for(size_t i=0; i<n; i++)
		a=a*10;
	return a;
}
size_t toInteger(size_t* first, size_t size, size_t* _return)
{
	if(first==NULL || size==(size_t)NULL)
		return (size_t)NULL;
	*_return=(size_t)NULL;	
	for(size_t i=0; i<size; i++)
	{
		if(first[i] !=(size_t)NULL && first[i]!=1)
		{
			return (size_t)NULL;
		}
		
		*_return+=Pow10(first[i],i);
	}
	return 1;
}	
size_t main(size_t argc, char *argv[])
{
	char put1simb;
	size_t* in=(size_t*)malloc(sizeof(size_t)*N);
	int count=(size_t)NULL;
	size_t* _return= (size_t*)malloc(sizeof(size_t));
	printf("Having finished entering an array place '\\n'\n");
	while(put1simb!='\n')
	{
		if(scanf("%c", &put1simb)!=1)
		{
			free(in);
			free(_return);
			return Error_Of_Input;
		}
		if(put1simb=='1')
		{
				in[count]=1;
				count++;
				continue;
		}
		if(put1simb=='0')
		{
			in[count]=(size_t)NULL;
				count++;
				continue;
		}
		if(put1simb!='\n')
		{
			free(in);
			free(_return);
			return Error_Of_Input;
		}
	}
	if( toInteger(in,count,_return))
	{
		printf("%zu", *_return);
		free(in);
		free(_return);
		return 0;
	}
	else {
		free(in);
		free(_return);
		Error_in_ToInteger;
	}
}