homework-00-warmup/main.c

@@ -29,24 +29,16 @@ int main() {
 
 	printf("%s\n", PROMPT);
 
-	// Use getline for dynamic allocation
 	ssize_t chars_read = getline(&buf, &len, stdin);
 
 	errno = 0;
 	long input = strtol(buf, &end, 10);
 
-	// Check whether a range error occured or
-	// No characters were read by getline
-	// or check that strtol didnt move a single char
-	if(errno == ERANGE || chars_read == -1 || end == buf) {
+	if(errno == ERANGE || chars_read == -1 || end == &buf[0]) {
 		printf("%s\n", NOT_A_NUMBER);
 		return EXIT_FAILURE;
 	}
 
-	// getline always adds the \n to the result string
-	// If the ending char by strtol is not that newline
-	// It means the string is not a whole number
-	// (e.g. 12abc, 1.23)
 	if(*end != '\n') {
 		printf("%s\n", INVALID_NUMBER);
 		return EXIT_FAILURE;
@@ -60,6 +52,5 @@ int main() {
 	printf("%s\n", INPUT_OKAY);
 	printf("%s\n", QUOTES[input]);
 
-	free(buf);
 	return EXIT_SUCCESS;
 }