Not checking return values in C

[Qomplainerz]

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)
}