int print(char *str)
{
	int i;

	for (i = 0; str[i] != '\0'; ++i)
		putchar(str[i]);

	return (i);
}

int print_string(va_list list)
{
	char *p;
	int p_len;

	p = va_arg(list, char*);
	p_len = print((p != NULL) ? p : "(null)");

	return (p_len);
}

void print_char(char c) {
  char s[2];

  s[0] = c;
  s[1] = '\0';

  print_string(s)
}

void myprintf(char *fmt, ...) {
  
  int i, argc = 0;
  char *s;

  while (*fmt) {
    if (*fmt == '%') {
      fmt++;
      argc++;
      switch (*fmt) {
        case '%':
          // Process of %%
          break;
        case 'c':
          // Process of %c
          break;
        case 'd':
          // Process of %d
          i = *((int*) ((char *)&fmt + argc * sizeof(void *)) );
          print_int(i);
          break;
        case 'u':
          // Process of %u
          break;
        case 's':
          // Process of %s
          s = *((int*) ((char *)&fmt + argc * sizeof(void *)) );
          print_string(s);
          break;
        break;
      }
    }else {
      // print a character as it is 
      print_char(*fmt);
    }
    fmt++;
  }
}


int main() {
  myprintf("I am %s, my age is %d", "Aayush Bajaj", 21);
  return 0;
}