Remove memory allocations for problem 40

problem-40.c

@@ -9,19 +9,8 @@
 int split_digits(int* digits, int num)
 {
 	int len = 0;
-
-	free(digits);
-	digits = malloc(1 * sizeof(int));
-
 	while (num > 0) {
 		len++;
-
-		digits = (int*)realloc(digits, len * sizeof(int));
-		if (digits == NULL) {
-			printf("A memory error occurred.\n");
-			exit(1);
-		}
-
 		digits[len-1] = num % 10;
 		num /= 10;
 	}
@@ -32,17 +21,11 @@ int split_digits(int* digits, int num)
 
 int main(int argc, char** argv)
 {
-	int* digits;
+	int digits[7] = {0};
 	int len;
 	int digit = 0, i = 0;
 	int prod = 1, num = 1;
 
-	digits = malloc(1 * sizeof(int));
-	if (digits == NULL) {
-		printf("A memory error occurred.\n");
-		exit(1);
-	}
-
 	len = split_digits(digits, num);
 
 	while (digit < MAX_NUM) {
@@ -62,6 +45,5 @@ int main(int argc, char** argv)
 	}
 
 	printf("The solution is %d\n", prod);
-	free(digits);
 	return 0;
 }