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

// ERROR HANDLING:  strerror(errno)

int main(int argc, char* argv[]) {

    FILE* fp = fopen("a.txt", "r");
    if(fp == NULL) {
        fprintf(stderr, "%s", strerror(errno));
        return EXIT_FAILURE;
    }

    for(char ch = fgetc(fp); !feof(fp) && !ferror(fp); ch = fgetc(fp)) {
        fprintf(stdout, "ch == '%c'\n", ch);
        fseek(fp, 0, SEEK_SET);  // go back to beginning of file
    }

    if(ferror(fp)) {
        fprintf(stderr, "%s", strerror(errno));
    }
    
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */