
/* 1*/	#include <stdio.h>	/* MS-DOS-specific */

/* 3*/	main()
/* 4*/	{
/* 5*/		FILE *fp;
/* 6*/		char filename[] = "\test.dat";

/* 8*/		fp = fopen(filename, "r");
/* 9*/		if (fp == NULL)
/*10*/			printf("Can't open file %s\n", filename);
/*11*/		else {
/*12*/			printf("File open\n");
/*13*/			fclose(fp);
/*14*/		}
/*15*/	}


Output

Can't open file  est.dat

