Resolve int overflow cases

Author: gr8justus

main.h

@@ -2,7 +2,6 @@
 #define MAIN_H
 #include <stdarg.h>
 #include <string.h>
-#define ABS(x) ((x) < 0 ? -(x) : (x))
 #define MIN(x, y) (((x) < (y)) ? (x) : (y))
 #define MAX_BYTE_SIZE 30
 
@@ -14,7 +13,7 @@ void print_error(char *);
 int parse_format(const char *);
 
 void *alloc(size_t);
-char *int_to_string(int);
+char *int_to_string(long);
 int str_write(char *);
 int print_decimal(va_list);
 

print_digits.c

@@ -18,17 +18,18 @@ int print_decimal(va_list ap)
 {
 	int count = 0;
 	int num = va_arg(ap, int);
+	long big_num = (long) num;
 	char *number_string;
 
-	if (num < 0)
+	if (big_num < 0)
 	{
 		write(1, "-", 1);
 		count++;
-		num = ABS(num);
+		big_num = labs(big_num);
 	}
-	if (num == 0)
+	if (big_num == 0)
 		return (write(1, "0", 1));
-	number_string = int_to_string(num);
+	number_string = int_to_string(big_num);
 	count += str_write(number_string);
 	free(number_string);
 	va_end(ap);

print_helpers.c

@@ -35,11 +35,11 @@ void *alloc(size_t size)
   * Return: (num_str) char *
   */
 
-char *int_to_string(int num)
+char *int_to_string(long num)
 {
-	int length = 1, tmp;
+	long length = 1, tmp;
 	char *num_str;
-	int i;
+	long i;
 
 	tmp = num;