Function insert_i_str

leif.c:1458–1472

}

void insert_i_str(char *str, char ch, int32_t index) {
  int len = strlen(str);

  if (index < 0 || index > len) {
    LF_ERROR("Invalid string index for inserting.\n");
    return;
  }

  for (int i = len; i > index; i--) {
    str[i] = str[i - 1];
  }

  str[index] = ch;
  str[len + 1] = '\0'; 
}

void insert_str_str(char* source, const char* insert, int32_t index) {
  int source_len = strlen(source);