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C compiled programs are not as strict as other high-level languages. This gives programmers the "flexibility", but still because of this flexibility to debug the program has brought a lot of inconvenience, especially for beginners of the C language, often a few even they do not know where the mistake. Look at the wrong program, I do not know how to change, through the study of C, accumulated some C programming often make mistakes, for reference.
1. W
Windows system in the lower right corner, that is, the notification area will display the Language bar, through this Language bar we can understand the current use of the input method, but also can be reset to the input method, very convenient. And most users are also accustomed to the Language bar in the notification
What is an interface?
When it comes to COM, you have to say interface; In the process of COM development, it can be said that I have been dealing with a variety of interfaces. What's the interface? For COM, an interface is a memory structure that contains an array of function pointers, each containing an address of a function implemented by the component, so for
//eax = a addl%eax,%eax//eax = eax + eax movl%eax,-4(%RBP)//b = EAX...CLANG...MOVL $5, -8(%RBP) MOVL $2, -8(%RBP)//A =2MOVL $3, -8(%RBP)//A =3MOVL $5, - A(%RBP)//b =5...In the understanding of GCCA = (b=c)// will be rewritten as b=CA=b// so for a = (b=c) + (d=e) // will be rewritten as B == + +d// when B and D are the same value, the variable space is reused, In the understanding of clangA = (b=c) + (d=e)// is
accepting different data type accesses in cases where the data type is too large, such as defining a variable at first:Buffer1 EQU This WORDBuffer2 DB DUP (0)Suppose you have the following statement:mov AX, Buffer1mov AX, Buffer2Where, in the word type access, MOV ax, Buffer1 equivalent to mov ax, WORD ptr Buffer2, this eliminates the tedious PTR operator.The above two statements are arranged in memory:|...... ...... 01h ....... | 02h | | | | | .....
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recently, StackOverflow released developer Survey Results 2017, which surveyed the developers using the language (favorite, most annoying, most wanted, etc.), checking the number of code, and so on, according to the investigation and drawing the table. programming languages most commonly used by programmers
The chart shows that JavaScript occupies the top spot of the survey, with the heat increasing, the SQL and Java ran
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