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typedef int FILE;
FILE *fopen(const char*, const char*);		   // Open a text file for writing on the PC 2nd param = "rt" or "wt" or "at"(append write text mode) 
int fprintf(FILE *f, const char * format, ...);		   // Print formatted string to the PC's Disk File
int fclose(FILE *f);                           // Close the disk file on the PC

#define MAX_READ_DISK_LENGTH 1024 // max allowed length of disk file line length
char *fgets(char *str, int n, FILE *file); //read string from PC disk file, str=buffer, n=buffer length, f=FILE pointer, returns NULL on error
int fscanf(FILE *f, const char *format, ...); //read sting from PC Disk file, convert values, returns number of items converted
int feof(FILE *f);   // End of file status for disk reading