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Tip of the Day
Language: C++
Expertise: Beginner
Aug 18, 2000



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Getting the Current File Position

The standard function ftell() reports the current file pointer position. The file pointer is a numeric value that represents the current position in the file in the form of offset in bytes from the files beginning. ftell() is declared in <stdio.h> as follows:

long ftell(FILE *);

ftell() takes a FILE* argument and returns the current offset from its beginning. You can store the returned value and use it to reposition the file pointer later:

FILE *data = fopen("payroll.dat", "r");
// ... check status and read from the file
long current_pos = ftell(data); // store current position
Danny Kalev
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