how to print variable

The first section looks at different angles and the values are different.Viewing data from different angles is different from the type of data you see(What to ask for attention)Common in the life of the 10 binary systemA two-bit decimal can

With the release of Xcode 5, the LLDB debugger has replaced GDB as the default debugger in Xcode engineering. Together with the LLVM compiler, it gives us more extensive process control and debugging capabilities for data detection. LLDB provides

1, the most basic IO statementName=input ()Print (' Hello, ', name)2, Python also allows to use R ' ' to indicate that the string inside of ' is not escaped by defaultPrint (' \\\t\\ ')Print (R ' \\\t\ ')3, null value is expressed as none, but not

When you use gdb to debug a program, you are often confused about the use of some commands. Either you do not know the command or forget how to use the command.Haha, sometimes I am confused about what stack I am in. This is a clear view of my

System settings If you want the system to generate a core file when an error occurs due to signal interruption, you need to set it in shell as follows:# Set the core size to unlimitedUlimit-c unlimited# Set the file size to unlimitedUlimit

Cd ~ : Enter the Home Directory of the user.Mkdir/home/testtan: Create the/home/testtan directory,Rmdir dirctory: Delete the corresponding directory,MV test4_4.c test4_4: Rename test4_4.c to test4_4,[Spsn @ localhost testtan] $ CP sum. C ~ /Test/tan_

MySQL database instance Parameter comparison script How to compare the parameters of two MySQL instances is usually the requirement in production. Recently, a python script has been written to achieve this requirement. Script #!

Describes how to use the type () method in Python. This article describes how to use the type () method in Python. It is the basic knowledge in getting started with Python. For more information, see The type () method returns the type of the

Common gdb commands and gdb commands When debugging a program, gdb is a powerful tool. The proper use of gdb can solve many bugs in the program. Gdb does not check syntax errors. It is a gcc or g ++ task. gdb does debugging. Note: (1) The gdb

Describes how to use the type () method in Python. The type () method returns the type of the passed variable. If the passed variable is a dictionary, it returns a dictionary type.Syntax The syntax of the type () method is as follows: Type (dict)

A piece of code (1) -- unsigned and signed, unsignedsignedSymptom: Let's take a look at a piece of code: The output result of this Code is: -84 4294967264Analysis: xiaoqiang@dev:~/cpp$ g++ -g c212.cc -o tempxiaoqiang@dev:~/cpp$ lsc143.cc c144.cc

The technique of debugging is an essential skill in any technology development. Master a variety of debugging skills, must be able to work in a multiplier effect. For example, quickly locate problems, reduce the probability of failure, help analyze

In Linux, you can specify an alias for an alias command: in Linux, if the command is too long and does not conform to the user's habits, you can specify an alias for it. Although you can create a "Link" for a command to solve the problem of long

PHP Basic functions Defining constants Define (' APPCONFIG ', ' placonfig '); GET constant ECHO constant (' APPCONFIG '). " \ n "; echo APPCONFIG. " \ n "; Constants cannot be defined two times Initialize the value of a variable Ini_set ('

I. Regular Expression Introduction Basic metacharacters (basic regular expressions): character matching :. match any character except the line break [] character group metacharacters. If the metacharacters are within [], it will lose special meaning

Shell programming Basics Leal Authorization license: Create sharing agreement GNU Free Documentation License Edited by: firehare, dbzhang800 We can use any text editor, such as gedit, kedit, emacs, VI, to write shell scripts. It must start with

Class 1/Object _ Autoload (string $ name) is used to automatically load classes.Bool class_alias ($ old, $ new) alias the class nameBool class_exists ($ name, $ autoload = false) check whether the class is definedArray get_class_methods ($ name)

Data typeA computer is a machine that can do mathematical calculations as the name implies, so a computer program can handle a variety of values. However, the computer can handle far more than the numerical value, but also can deal with text,

Data types and variables reading: 424214 data typesA computer is a machine that can do mathematical calculations as the name implies, so a computer program can handle a variety of values. However, the computer can handle far more than the numerical

I. Introduction ofphp PHP hypertext pre-processor. is a server script embedded in an HTML file.PHP code tag: PHP file extension:. phpPHP File execution: Must start from the domain name to accessPHP Each statement must end in English (;) ii.basic