07-26-2023, 07:12 AM
Neglecting to check the return values of functions that can fail (e.g., malloc, fopen, etc.) can lead to errors.
// Incorrect
FILE *file = fopen("non_existent_file.txt", "r");
// No check for the success of fopen()
// Correct
FILE *file = fopen("non_existent_file.txt", "r");
if (file == NULL) {
// Handle error (file not opened)
}
// Incorrect
FILE *file = fopen("non_existent_file.txt", "r");
// No check for the success of fopen()
// Correct
FILE *file = fopen("non_existent_file.txt", "r");
if (file == NULL) {
// Handle error (file not opened)
}