1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #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("DOES_NOT_EXIST.txt", "r");
//if(ferror(fp)) { // Segmentation fault!!!
//if(fp == NULL) { // probably fine
if(fp == NULL || ferror(fp)) { // also okay
fprintf(stderr, "%s", strerror(errno));
return EXIT_FAILURE;
}
for(char ch = fgetc(fp); !feof(fp) && !ferror(fp); ch = fgetc(fp)) {
fputc(ch, stdout);
}
if(ferror(fp)) {
fprintf(stderr, "%s", strerror(errno));
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
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