C Error Handling

programming C MOC

---

There are no exceptions in C and must be accounted for.

#include <stdio.h>
#include <time.h>
#include <string.h>
 
int main() {
    FILE *file;
    if (!(file = fopen("config.txt", "r"))) {
        file = fopen("errors.log", "a");
        time_t timestamp = time(NULL);
        fprintf(file, "%s : config.txt doesn't exist\n", strtok(ctime(&timestamp), "\n"));
        fprintf(stderr, "Error executing program, check errors.log");
        fclose(file);
        return 1;
    }
 
    // Make use of config file here...
 
    fclose(file);
 
    return 0;
}