yes

printf.c

@@ -11,7 +11,7 @@
  **/
 int _printf(const char *format, ...)
 {
-	int buff_idx;
+	int buff_idx, fmt_idx;
 	unsigned int identifiers, BUFF_SIZE;
 	char *buffer, *next;
 	va_list args;
@@ -25,7 +25,8 @@ int _printf(const char *format, ...)
 	if (!format) /* No string. No laundry */
 		return (0);
 	buff_idx = 0;
-	while (format)
+	fmt_idx = 0;
+	while (*(format + fmt_idx))
 	{
 		if ((*format == '%') && (*(format + 1))) /*hello %s*/
 		{
@@ -34,7 +35,9 @@ int _printf(const char *format, ...)
 				case 's':
 					next = va_arg(args, char*); /*Store string temporarily*/
 					buffer = _strcpy(buffer, next);
-					BUFF_SIZE += _strlen(buffer);
+					BUFF_SIZE = _strlen(buffer);
+					buff_idx += _strlen(next);
+					fmt_idx += 2;
 
 					break;
 				case 'c': /* add 1 byte and i++ */
@@ -45,11 +48,12 @@ int _printf(const char *format, ...)
 		}
 		else
 		{
-			*(buffer + buff_idx) = *(format + buff_idx);
+			*(buffer + buff_idx) = *(format + fmt_idx);
 			buff_idx++;
+			fmt_idx++;
 		}
 	}
 
-	write(1, &buffer, BUFF_SIZE);
+	write(1, buffer, BUFF_SIZE);
 	return (_strlen(buffer));
 }

strcpy.c

@@ -23,6 +23,8 @@ char *_strcpy(char *dest, char *src)
 		*(new_me + s_idx++) = *(src + i);
 	*(new_me + _strlen(new_me)) = '\0';
 
+	free(dest);
+
 
 	return (new_me);
 }

tests/hello.c

@@ -8,5 +8,6 @@ int main(void)
 {
 	int len;
 
-	len = _printf("Hello world");
+	len = _printf("Hello world\n");
+	return (len);
 }

tests/str_print.c

@@ -9,10 +9,11 @@
 
 int main(void)
 {
-	char test_0[] = "Hej";
+	char *test_0 = "Hej";
 /*
  * Brain ded to think bout test cond
  */
-	return (_printf("%s", test_0));
+	_printf("%s \n", test_0);
+	return (_printf("hey, %s", test_0));
 
 }

tests/test.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+gcc -Wall -pedantic -Werror -Wextra -std=gnu89 $1 ../*.c -o a
+./a