Check present of a file

Write a program to check the presence of a file in the present working directory. Input has to be given at load time. (Command line Argument)

#include<stdio.h>
int Check_Presence_of_File(char*);
enum File_Status{IS_PRESENT,IS_NOT_PRESENT};
int main(int argc,char**argv)
{
	if(argc != 2)
	{
		printf("Usage:./a.out filename\n");
		return 0;
	}
	if(IS_PRESENT == Check_Presence_of_File(argv[1]))
		printf("File is present in this directory\n");
	else
		printf("File is not present in this directory\n");
	return 0;
}
int Check_Presence_of_File(char* p)
{
	FILE *fp;
	fp = fopen(p,"r");
	if(fp == NULL)
		return IS_NOT_PRESENT;
	else
		return IS_PRESENT;
}

Output

./a.out data
File is present in this directory

./a.out junk
File is not present in this directory