hand.c

#include <stdio.h>
#include <string.h>

/*
 * counts the number of characters in a text file.
 * The executable can be invoked with a command line argument 
 * which must be the name of an existing file 
 * If no file is provided, by default it will read the 
 * file name "hand.txt" and print the number of characters 
 * in that file
 */
int main(int argc, char* argv[])
{
    char fname[30];
    argc > 1? strcpy(fname, argv[1]): 
        strcpy(fname, "hand.txt");
        
    FILE* fp = fopen(fname, "r");
    if (fp == NULL) {
        printf("File %s: Not available!\n", fname);
        return -1;
    }
    
    int count = 0;
    char c;
    while ((c = fgetc(fp)) && !feof(fp)) {
        printf("%c(%d) \t", c, ++count);
    }
    printf("\nNumber of bytes: %d\n", count);
    
    fclose(fp);
    return 0;
}