FTELL()

this function is used to check the current position of the file pointer in a file. it can be used to determine how many bytes have been written in a file.

#include <stdio.h>

void run_main_program() {
    // Step 1: Open the file in write mode
    FILE *file = fopen("/home/chef/workspace/tracklog.txt", "w");

    // Step 2: Check if the file opened
    if (file == NULL) {
        printf("Error opening file.\n");
    }
    else{
        // Step 3: Write to the file
        fprintf(file, "Write complete.\n");

        // Step 4: Get current file position
        long pos = ftell(file);

        // Step 5: Print position
        printf("Current position: %ld\n", pos);

        // Step 6: Close the file
        fclose(file);
    }
}

int main() {
    run_main_program();
    return 0;
}