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- How to use strlen in c language
- The strlen() function is used in C language to calculate the length of a given string, excluding the null terminator: Declare a char array or pointer to store the string. Get the string. Pass a string pointer as an argument to the strlen() function. Store the returned length in a variable.
- C#.Net Tutorial 490 2024-04-27 22:36:43
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- What does | mean in c language?
- The | operator in C language is a bitwise logical OR operator, which is used to perform a bitwise OR operation on two binary numbers bit by bit: when both bits are 0, the result is 0, when one of the two bits is 0 The result is 1 when both bits are 1, and 1 when both bits are 1. It is commonly used to set flag bits, merge bitmaps, extract specific bits, and detect parity bits.
- C#.Net Tutorial 580 2024-04-27 22:33:47
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- How to express x to the nth power in C language
- There are two ways to represent x raised to the nth power in C language: using the pow() function, that is, pow(x, n); using the exponential operator, that is, x ** n.
- C#.Net Tutorial 830 2024-04-27 22:33:32
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- The difference between x++ and x+ in c language
- The difference between x++ and x+ in C language: x++: post-increment operator, first assigns the value of x to the expression, and then adds 1 to x. x+: Addition operator, adds x to the specified value and assigns the result to the expression.
- C#.Net Tutorial 325 2024-04-27 22:33:19
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- How to express the nth power of x in C language
- There are two ways to express the nth power of x in C language: use the pow() function: #include <math.h>, double result = pow(x, n); use the exponential operator: double result = x ^ n ;
- C#.Net Tutorial 1198 2024-04-27 22:30:50
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- How to calculate 2∧3 in C language
- In C language, 2∧3 means 2 raised to the third power, which is 8. Calculation method: Base 2 is raised to exponent 3.
- C#.Net Tutorial 900 2024-04-27 22:30:36
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- What do x and x- mean in C language?
- The increment (++) and decrement (--) operators in C language: The increment operator increases the variable value by 1 and has prefix (++x) and suffix (x++) forms. The decrement operator decreases the value of a variable by 1 and also has prefix (--x) and suffix (x--) forms. The prefix form performs increment/decrement before using the variable, and the suffix form performs increment/decrement after using the variable.
- C#.Net Tutorial 327 2024-04-27 22:27:48
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- The difference between formal parameters and actual parameters in C language
- Formal parameters and actual parameters are concepts in function calls. Formal parameters are used to receive actual data, and actual parameters are used to pass actual data. The formal parameters are located in the function header, and the actual parameters are located when the function is called; the formal parameters and the actual parameters establish a one-way relationship, and the actual parameters can modify the formal parameters but not vice versa; the scope of the formal parameters is limited to the function but the actual parameters are independent of the function; data type The upper formal parameter must specify a clear type, and the actual parameter type must be compatible with the formal parameter.
- C#.Net Tutorial 845 2024-04-27 22:27:32
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- What is the difference between ++i and i++ in c language
- In C language, ++i and i++ are both increment operators, but the difference is: ++i is a prefix operator, which increments first and then gets the value; i++ is a postfix operator, which takes the value first and then increments; ++i returns increment The value after; i++ returns the value before and after incrementing.
- C#.Net Tutorial 1183 2024-04-27 22:27:14
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- How to retain two decimal places for output in C language
- Keep two decimal places for output in C language: use the printf() function; specify the format specifier %.2f, which means that floating point numbers keep two decimal places.
- C#.Net Tutorial 1207 2024-04-27 22:24:55
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- Usage of && and || in c language
- The && (logical AND) and || (logical OR) operators in C language are used to combine conditional expressions. The && operator determines that both expressions are true; the || operator determines that at least one of the two expressions is true. The operator has high precedence and supports short-circuit evaluation. It is executed first in the expression. If the first expression is sufficient to determine the result, the second expression is not evaluated.
- C#.Net Tutorial 562 2024-04-28 09:43:07
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- Usage of ?: in c language
- C language ?: operator, also known as ternary conditional operator, executes different code blocks based on conditions. Syntax: condition ? true_expression : false_expression. It first evaluates the condition, and if it is true, executes the true code block, otherwise executes the false code block and returns the corresponding value. Specific uses include: conditional assignment, simplifying if-else statements, serving as function parameters, and assigning values to different types. Pay attention to expression type compatibility and use parentheses to ensure correct evaluation of conditions.
- C#.Net Tutorial 1144 2024-04-27 22:24:19
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- What is the expression of perimeter in C language?
- In C language, perimeter is represented by a variable. For decimal perimeters, use floating-point variables (float), such as float perimeter;; for integer perimeters, use integer variables (int), such as int perimeter;.
- C#.Net Tutorial 804 2024-04-27 22:21:43
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- The difference between / and % in C language
- The difference between '/' and '%' operators in C language: '/' is the division operator and is used to calculate the quotient. '%' is the modulo operator used to calculate the remainder. The divisor must be a positive integer, and the dividend can be a positive or negative integer.
- C#.Net Tutorial 657 2024-04-27 22:21:30
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- The difference between ++a and a++ in c language
- In C language, the difference between the increment operators ++a and a++ is: ++a (prefixed increment): first increments the variable and then returns the updated value. a++ (post-increment): first returns the original value of the variable, and then increments the variable.
- C#.Net Tutorial 637 2024-04-27 22:21:14
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