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- The meaning of define in c language
- The define keyword defines a symbol in C language, replaced by a specified value, and is used for constant definition, macro substitution and conditional compilation.
- C#.Net Tutorial 889 2024-05-02 15:36:17
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- What does static stand for in C language?
- In C language, static represents: 1. Local static variables: declared in a function, initialized when called, and retained at the end of the call. 2. Global static variables: declared outside the function, initialized when the program starts, and the value remains unchanged. 3. Static function: It can only be used in the source file where it is declared. 4. Make sure the variable or function is initialized only once. 5. Prevent redeclaration in header files. 6. Reduce function call overhead.
- C#.Net Tutorial 1165 2024-05-02 15:33:16
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- What does n10 mean in c language?
- n10 represents a decimal integer constant in C language, with a specific value of 10.
- C#.Net Tutorial 540 2024-05-02 15:30:26
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- How to use do while in c language
- The usage of do while loop in C language: execute the loop body at least once, and then continue execution when the conditional expression is checked to be true. Terminates the loop when the conditional expression is false. Unlike a while loop, the conditional expression is executed once even if it is false.
- C#.Net Tutorial 775 2024-05-02 15:27:16
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- What does do while mean in c language?
- The do while statement checks the condition after executing the code block first, and does not stop execution until the condition is false. 1) Execute the code block; 2) Check the condition; 3) Continue to execute the code block if the condition is true, and jump out of the loop if the condition is false. The difference from the while statement is that the do while loop executes the code block at least once, while the while statement may not execute.
- C#.Net Tutorial 636 2024-05-02 15:24:15
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- Usage of do while in c language
- The do-while loop is suitable for situations where it is necessary to check the loop condition after executing the loop operation at least once: the loop body statement is executed first. Check the loop conditions again. If the loop condition is true, execution of the loop body continues.
- C#.Net Tutorial 492 2024-05-02 15:21:17
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- How to use default in c language
- The purpose of default: In the switch statement, the specified code block is executed when there is no matching case. Usage: 1. Syntax: switch (expression) { case constant 1: code block 1; break; ... default: code block n; break; } 2. The default code block is optional and is recommended to be included to handle unmatched Case. Example: When there is no matching case in the switch, the default code block will be executed, as in the following example that prints "D".
- C#.Net Tutorial 858 2024-05-02 15:18:16
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- The role of default in c language
- default is a keyword used in switch-case statements and is executed when the expression does not match any case. It provides a general mechanism for handling all unhandled situations and is commonly used for error handling.
- C#.Net Tutorial 798 2024-05-02 15:15:20
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- How to use default in C language
- default is a keyword in the C language switch statement, used to specify the code block to be executed when there is no matching branch: Syntax: switch (expression) { case value 1: code block 1; break; case value 2: code block 2 ; break; ... default: default code block; break; } Function: Process all branches that do not have an explicit match. When to use: Make sure the switch statement handles all input values.
- C#.Net Tutorial 421 2024-05-02 15:12:16
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- Code to determine odd and even numbers in c language
- In C language, you can use the modulo operation (%) to determine odd and even numbers: calculate the remainder after dividing by 2. If the remainder is 0, it is an even number; if the remainder is not 0, it is an odd number.
- C#.Net Tutorial 1169 2024-05-02 15:09:14
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- What does fopen stand for in c language
- fopen is a function in C language used to open a file. It accepts a file path and mode as parameters and returns a pointer to the file. Available modes are read-only ("r"), write-only ("w"), append ("a"), and read-write ("r+", "w+", "a+"). A pointer to the FILE object is returned on successful file opening, or NULL on failure.
- C#.Net Tutorial 766 2024-05-02 15:06:16
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- How to use short in c language
- In C language, short is a short integer data type, used to store integers smaller than the range of int, occupying 2 bytes of memory space, and the common range is -32,768 to 32,767. Purposes include saving memory and improving efficiency, but it has a smaller range and cannot represent unsigned values.
- C#.Net Tutorial 404 2024-05-02 15:03:18
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- How to use define in c language
- The define directive of C language is used to define macros to achieve code reuse and maintainability. Its usage is: #define macro name value. Advantages include: defining constants, simplifying code, and improving maintainability. Notes include: macro names cannot start with numbers or underscores. Macros are expanded during the preprocessing stage. Macros should be used with caution.
- C#.Net Tutorial 796 2024-05-02 15:00:32
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- What does the double equal sign mean in C language?
- The double equal sign (==) in C language is an assignment operator, used to assign a value to a variable: Syntax: variable_name == value; Usage: Assign the value of the expression on the right to the variable specified on the left; Note: The double equal sign is an assignment operator, not a comparison operator. The comparison operator is the single equal sign (=).
- C#.Net Tutorial 863 2024-05-02 14:57:13
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- The difference between single equal sign and double equal sign in C language
- The single equal sign (=) is used for assignment, assigning the right value to the left variable; the double equal sign (==) is used for comparison, to determine whether the two operands are equal, and returns 0 (false) or 1 (true).
- C#.Net Tutorial 516 2024-05-02 14:54:14
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