strerror
suggest changeIf perror
is not flexible enough, you may obtain a user-readable error description by calling strerror
from <string.h>
.
int main(int argc, char *argv[]) { FILE *fout; int last_error = 0; if ((fout = fopen(argv[1], "w")) == NULL) { last_error = errno; /* reset errno and continue */ errno = 0; } /* do some processing and try opening the file differently, then */
if (last_error) { fprintf(stderr, "fopen: Could not open %s for writing: %s", argv[1], strerror(last_error)); fputs("Cross fingers and continue", stderr); } /* do some other processing */ return EXIT_SUCCESS; }
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