Question

我正在为某个功能而苦苦挣扎。目标是检查（已清除）用户输入并采取相应措施。

函数如下：

bool checkMove(board *Minesweeper,char *input){
  char *tmp;
  switch(input[0]){
    case '?':
      if(isalpha(input[1])){
        input[1]=toupper(input[1]);
        long eval = strtol(input, &tmp, 10);
        if(tmp==input){
          printf("something went wrong :(\n");
        }
        printf("Number: %ld\n",eval);

        if (eval>Minesweeper->height) {
          printf("Out of Bounds!\n");
        } else {
          printf("Valid move\n");
        }
// other stuff

输出：

Your Move: ?A21
something went wrong :(
Number: 0
Valid move

我正在传递输入值，因此它不是局部函数。相同的代码（strtol）可以在不同的上下文中正常工作。我认为这与局部变量无关。

Answer 1

来自man pages：

“ private void formWindowStateChanged(java.awt.event.WindowEvent evt) { System.out.println(this.getState()); if(this.getState()==1){//this means minimized System.out.println("Está minimizado"); } else if(this.getState()==0){//this means maximized/normal state System.out.println("Está maximizado"); } }函数将转换字符串的起始部分...”

您的字符串以“ strtol()”开头，因此该函数失败。一种解决方案是改为执行以下操作：

?A

通过这种方式，您可以“跳过” long eval = strtol(input+2, &tmp, 10);中的前两个char。

Answer 2

很多人建议，要开始数字转换，请从/v1/customers开始。

{
  "error": {
    "code": "resource_missing",
    "doc_url": "https://stripe.com/docs/error-codes/resource-missing",
    "message": "No such token: {{ token }}",
    "param": "source",
    "type": "invalid_request_error"
  }
}

谨慎代码会首先检查严格条件长度至少为2。

2019-12-21T18:14:52.154021+00:00: at=info method=POST path="/manage/billing/" host=app.com 
2019-12-21T18:14:52.134957+00:00: [4] [INFO] pathname=/app/python/lib/python3.6/site-packages/stripe/util.py lineno=63 funcname=log_info message='Stripe API response' path=https://api.stripe.com/v1/customers/cus_foo response_code=404
2019-12-21T18:14:52.136422+00:00: [4] [INFO] pathname=/app/python/lib/python3.6/site-packages/stripe/util.py lineno=63 funcname=log_info error_code=resource_missing error_message='No such customer: cus_foo' error_param=id error_type=invalid_request_error message='Stripe API error received'
2019-12-21T18:14:52.136791+00:00: [4] [ERROR] pathname=./management/views.py lineno=1755 funcname=admin_billing Stripe error: Request req_bar: No such customer: cus_foo
2019-12-21T18:14:52.153639+00:00: [4] [INFO] pathname=/app/python/lib/python3.6/site-packages/uvicorn/protocols/http/httptools_impl.py lineno=443 funcname=send ('10.45.113.223', 12377) - "POST /manage/billing/ HTTP/1.1" 302

以后的转换检查也需要修改

input + 2

为什么strtol返回零？

2 个答案: