Brackets Finder Bug

#include <stdio.h>
#include <string.h>

#define MAX_BRACK 65500
//Defining Path and variable//
int a[MAX_BRACK],top;
char filepath[256] ="";
int currentline = 0;
int openbrack,closebrack = 0;
//Defining Path and variable//
void getfilename();
void check();
void pop();
void credits();
void push(int valueofline);
void getfilename()
{
	printf("Please insert File path ");
	scanf("%s",&filepath);
	printf("Read filepath is %s done\n",filepath);
	printf("Reading ...\n\n");
	printf("Finding Missing Brackets (Not closed) \n\n");
}
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int main ()
{
	credits();
	getfilename();
	FILE *filereader;
	filereader = fopen(filepath,"r");
	char tmpline[256];
	while(fgets(tmpline,sizeof(tmpline),filereader))
	{
		currentline++;
		if(strstr(tmpline,"{"))
		{
			push(currentline);
			openbrack++;
		}
		if(strstr(tmpline,"}"))
		{
			pop();
			closebrack++;
		}

	}
	printf("Number of Open Bracklets = %d\n",openbrack);
	printf("Number of Closed Bracklets = %d\n\n",closebrack);

	if(openbrack == closebrack)
	{
		printf("Code Perfect No Bracket Missed\n");
		getchar();
	}
	if(openbrack != closebrack)
	{
		//print stack
		for (int i = 1; i <=top ; i++)
		{
			printf("Problem Brackets not close , start at Line %d\n",a[i]);

		}

	}
}
void push (int valueofline)
{
	if(top == MAX_BRACK)
	{
		printf("Overflow");
	}
	else
	{
		top=top+1;
		a[top] = valueofline;
	}
}
void pop ()
{
	if(top == -65000 )
	{
		printf("Underflow");
	}
	else
	{
		top=top-1;
	}
}

void credits()
{
printf("---------------------------------------------------\n");
printf("---------------------------------------------------\n");
printf("-=====--=====--=------=====--==---=--=====--=------\n");
printf("-=------=---=--=------=---=--=-=--=--=------=------\n");
printf("-=------=---=--=------=---=--=--=-=--=====--=------\n");
printf("-=------=---=--=------=---=--=---==--=------=------\n");
printf("-=====--=====--=====--=====--=----=--=====--=====--\n\n\n");
printf("---------------------------------------------------\n");
printf("---------------------------------------------------\n");
printf("Bracklets Checker By Colonel \n\n\n");
}