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#define CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <malloc.h>

int PEEK(FILE* IN, int** stack, int* stack_mem) {
	printf("PEEK 1-");
	static FILE* in = NULL;
	if (IN == in) {
		if (!IN) {
			printf("FILE* = NULL first time");
			return 2;
		}
	}
	in = IN;
	printf("2-");
	int k = fscanf_s(in,"%i", stack[(*stack_mem)-1]);
	if (k == 0) {
		printf("Wrong File Format");
		return 1;
	}
	else {
		if (k < 0) {
			printf("EOF - input File");
			return 2;
		}
	}
	printf("3-");
	printf("[%i]=",*stack[((int)*stack_mem) - 1]);
	printf("[%i]-", (*stack_mem + 1));

	int* secure;
	secure = (int*)realloc(*stack , (1+(*stack_mem)) * sizeof(int) );
	if (secure == NULL) {
		printf("Out_Of_Memory [PEEK(stack_mem=%i)]", (*stack_mem)+1);
		return 2;
	}
	*stack = secure;
	free(secure);
	(*stack_mem)++;
	//printf("4-StacKmem[%i]\n",*stack_mem);
	return 0;
}

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<malloc.h>

int main(){
	int* stack;
	int stack_mem = 1;

	stack = (int*)calloc(stack_mem,sizeof(int));

	FILE *IN, *OUT;
	IN = fopen("input.txt","r");
	OUT = fopen("output.txt", "w");

	//IN = freopen("input.txt", "r", stdin);

	PEEK(IN, &stack, &stack_mem);

	PEEK(IN, &stack, &stack_mem);

	PEEK(IN, &stack, &stack_mem);
	printf("FREE_stage");
	free(stack);
	fclose(IN);
	fclose(OUT);
}