Member Avatar for Freespider

i am writing a code that inputs a struct (of two ints) into an array pointer of this specific struct,
i need that some of the "cell" in the array will be empty(with NULL or spam like -568558), but still i need to identify those cells and not print them....just the int numbers, how can i do that?

here is the code and the output...

the output is containing both the numbers of the pointers and the right output i need(i need just to print the input acctually)...

its the first time i am writing here
so i am sorry if somehow i am passing on the rules of the forum.

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

typedef struct monom{
int coefficient; 
int power; 
}Monom;

int flag=1;
void readPolinome(Monom** polimone,int* size);

void main()
{
	Monom* polinome1,*polinome2;
	int size1,size2,i=0;

	readPolinome(&polinome1,&size1);

	while (i<size1)
	{
		if ( ((polinome1+i)->coefficient) ==NULL && ((polinome1+i)->power) ==NULL)
			i++;
		else
		{
			printf_s("%d %d ",(polinome1+i)->coefficient,(polinome1+i)->power);
			i++;
		}
	}

	free((void*)polinome1);
	
}

void readPolinome(Monom** poli,int* size)
{
 Monom* poliArr,input;
 int maxSize=1; 
	
	poliArr = (Monom*)malloc(1*sizeof(Monom)); // array with 1 cell of coefficient 0 cant be placed
	printf("Input coefficients and Powers , ending with -1 -1:\n");
	while (flag)
	{
		 scanf_s("%d%d",&input.coefficient,&input.power);

			if ((input.coefficient == -1 ) && (input.power == -1 ))
				flag=0;
			else 
			{
				if (input.power > maxSize)
				{
					maxSize = input.power;
					poliArr = (Monom*)realloc((void*)poliArr,(input.power)*sizeof(Monom));
				}
			*(poliArr + input.power -1) = input;

			}
	}
*poli = poliArr;
*size = maxSize;
}



Input coefficients and Powers , ending with -1 -1:
2 4 5 6 -1 -1
-842150451 -842150451 -842150451 -842150451 -842150451 -842150451 2 4 -842150451
 -842150451 5 6 Press any key to continue . . .
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  • Latest Post Latest Post by Narue
Member Avatar for Narue

Well, since -1 in both fields is your stopping case, you can use that as an "empty" instance.

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