ftell() in C

by Online Tutorials Library July 14, 2022

C ftell() function

The ftell() function returns the current file position of the specified stream. We can use ftell() function to get the total size of a file after moving file pointer at the end of file. We can use SEEK_END constant to move the file pointer at the end of file.

Syntax:

Example:

File: ftell.c

 #include  #include  void main (){    FILE *fp;    int length;    clrscr();    fp = fopen(“file.txt”, “r”);    fseek(fp, 0, SEEK_END);     length = ftell(fp);     fclose(fp);    printf(“Size of file: %d bytes”, length);    getch(); } 

Output:

Size of file: 21 bytes

Next TopicC Preprocessor

ftell() in C

C ftell() function

Dangling Pointers in C

Return an Array in C

You may also like