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实际上,-2147483648是一个表达式:一个正整数2147483648和一个一维运算符“-”。对于32位机,2147483648明显已经超过了int的范围。如果long int有“更大的范围”,编译器会自动的假定2147483648为long int型。(C++11的编译器会假定为long long int型)。这样才会得到用户想要的“负的2147483648” 然而很明显,如果long int...
#include <stdio.h> #define paster( n ) printf( "token "#n" = %d\n ", token##n ) int main() { int token9=10; paster(9); return 0; } #define语句中的#是把参数字符串化,##是连接两个参数成为... 真假常量——const和define ...
Stringizing Operator (#) in C Token Pasting Directive Operator (##) in C C language Command Line Arguments Basics of file handling with writing and reading text Introduction and Graphics Modes in Turbo C Compiler Using Colors in Text Mode ...
<PythonCommands> $(PythonCommands); Example_RunStartupFile </PythonCommands> Tip If you want your custom command to appear on the context menu before the default commands defined in the $(PythonCommands) token, position the <Target> syntax for your command before that token. Save your projec...
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数据库 python 数据 原创 mob649e81553a70 2023-08-23 10:20:20 158阅读 #define用法集锦 Definition:The #define Directive You can use the #define directive to give a meaningful name to a constant in your program. The two forms of the syntax are: Syntax #define identifier token-stringop ...
python define function >>>def square(x): ...'calculates the square of the number x.'...returnx*x ...>>>square.__doc__'calculates the square of the number x.'>>>help(square) Help on function squareinmodule __main__: square(x)...
## 连接操作符 ##表示连接(token pasting, or token concatenation,merge two tokens into one while expanding macros)。x##y表示什么?表示x连接y,举例说: 1 2 3 4 怎么样,很神奇吧! 需要注意的是,##的左右符号必须能够组成一个...猜你喜欢
Python 复制 from dlt import table, on_event_hook, read import requests import json import time API_TOKEN = dbutils.secrets.get(scope="<secret-scope>", key="<token-key>") SLACK_POST_MESSAGE_URL = 'https://slack.com/api/chat.postMessage' DEV_CHANNEL = 'CHANNEL' SLACK_HTTPS_HEADER_...