c# codecademy

[Mac 10.7.1 Lion x64 Intel-based gcc4.2.1 xcode4.2] Q: Explain the title.A: I vaguely remember that when I wrote A function with the absolute value of A value, it was really painful to write it to the third one. After repeating so many times, I immediately realized the significance of heavy load and STL.[Cpp]1. int abs (int n)2 .{3. return n 4 .}5.6. long abs_long (long n)7 .{8. return n 9 .}10.11. double abs_double (double n)12 .{13. return n 14 .}When I wrote the third function, I felt really

C # Study Notes (compared with Java, C, C ++, and Python)Recently I am going to learn about Unity3D, and select C # in C # and JavaScript #. Therefore, as a preparation for learning Unity3D, you must first learn C #. It took a day

The mainstream of the mobile phone platform is many, and the main platform of the language support is similar;1, Windows system WP8 on the main support VB, C #, C + +,2, Apple system iOS support OBJECT-C, C + +3, Android system support Java, C + +So how do you choose a cross

Why do I use exceptions in C + +?Many people may know about the anomaly mechanism in C + +, which many people may not know. Many people know what is commonly used in C assert , and know that it is specified at compile time NODEBUG to ignore it.For the C language, using normal if-else is a good choice, whereas in

(1) A simple C ++ program named "c ++ Primer" in the wind color from zero to single, and "cprimer" c ++ C ++ Primer What we learned 0. Preface I used to take C ++ courses, but I didn't study it seriously at the time. I basically cannot use

3.4 Boolean TypeIn our daily life, we need to use a variable of type int to represent bus 216; A variable of type float is required to represent 3.5 yuan a pound of tomato, and sometimes it needs to represent a data, which is the logical state:"Have you passed the C + + exam this time?" ”"Does he really love me?" ”The "over-and-over" and "love-not-love" are all representations of a logical judgment. Compared with the bus line and the price of tomato w

Because the company has always been engaged in C ++ development, because the customer needs to provide the C # version interface, I studied C # and found that it is powerful and concise, it is completely encapsulated in cross-language calls and provides powerful API interaction. this is much more convenient than JNA. both Java and

[C Language] annotation Conversion -- C annotation is converted into a standard C ++ language annotation, AnnotationI. Specific requirements: 1: C-style comments/**/comments are converted to Standard C ++ styles // comments 2: // The style comment remains unchanged 3: All co

1.1 Clause 1: view C ++ as a federated Language) Main sub-language (sublanguage) of C ++ ):L [3-1-1] C ++ is still based on C. Block (blocks), statement (statements), Preprocessor (preproccessor), built-in data type (built-in data types), array (arrays), pointer (pointers) and so on.L [3-1-2] object-oriented

fun3 () declaration is displayed, add a column in the ing table: Name Bar | type bar | Address Bar B: fun3 () | B: fun3 | point to B: fun3 () Definition Member function fun2 inherited from the parent class () Add a column to the ing table: records the fun2 () function inherited from. Name Bar | type bar | Address Bar B: fun2 () | A: fun2 | point to the parent class A: fun2 () Definition */} // C inherits fromClass

1) Why c ++? Because performance per $, that is, performance is money, it is divided into three aspects: Power supply, chip power consumption, mobile device power consumption, and home computer power consumption are related to money. Resources, household computers, and mobile devices have limited processor resources, because they need to be purchased by general consumers. Experience: You can have a better experience on a smaller device, and earn mor

C Language Learning second-c language basic learning, language learning second-c 1. Standard C Language C language was born in 1970s. It was older than ourselves. Many standards were generated during this period, but various compilers have different support for the standards

C language should start from the chatty, from the foundation. It belongs to the best. Don't be misled by it. It also has very many errors and is not suitable for standard software developers to use. Variable declarations, definitions, programming specifications are completely substandard, but from the language learning to achieve the ultimate, there are a large number of different samples and questions. Standard textbook Book:

Register Keyword: The request compiler lets the variable be placed directly inside the CPU internal registers, rather than through memory addressing access, fast.In C, the register-modified variable cannot take the address, and the address of the register variable is in C language error.int main (){register int a=0;printf ("a=%x\n", a);return 0;}Compile Error!The same code we put in the

C + + all variables and functions must have a type;C The default type in the language is not legal in C + +! In C language can write some very strange function! and can run successfully!What type is the return value of the F (i) function? What is the parameter type? We have a value of 10 to print out!How many parameter