What does “not” do in programming? A. Make a statement false. B. Make a statement true. C. Add two statements together. D. Subtract two statements. 相关知识点: 试题来源: 解析 A。“not”在编程中用于否定一个陈述,使其变为假。B 选项错误;C 选项是“and”等的作用;D 选项错误。
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a programming language is a set of instructions that tell a computer to perform certain tasks. it's like a spoken or written language, but instead of being used to communicate with people, it's used to control the behavior of machines. just like there are many different human languages, ...
In a programming loop, “while the value is less than 10, keep adding 1.” What keyword is used? A. if B. when C. where D. while 相关知识点: 试题来源: 解析 D。本题考查循环语句中的关键词,“while”表示当值小于 10 时,持续加 1。“if”用于条件判断;“when”“where”不符合该语境...
Here using the NULL pointer you can avoid theundefined behaviorof your C program. Now you are thinking how; don’t worry I am explaining the way. In C/C++ programming a null pointer is guaranteed to compare unequal to a pointer to any object or function; that means(ptr1 == ptr2)isfa...
Yes, there are alternatives to using 'N/A' in computer programming. For example, you could opt for using a null value instead, which signifies the lack of a value rather than explicitly stating that no answer is available. Additionally, another option could be to use an error code such as...
Thefieldkeyword is a preview feature in C# 13. You must be using .NET 9 and set your<LangVersion>element topreviewin your project file in order to use thefieldcontextual keyword. You should be careful using thefieldkeyword feature in a class that has a field namedfield. The newfieldkeyword...
An API is a set of rules or protocols that enables software applications to communicate with each other to exchange data, features and functionality.
This is declarative programming as discussed earlier; the maker specified what they wanted to have in the label, not how or when it should be fetched. In fact, if this label is not visible because it is on a screen that is not visible or its Visible property is false, we can defer...
In computer programming, null is both a value and a pointer. Null is a built-in constant that has a value of zero. It is the same as the character 0 used to terminate strings in C. Null can also be the value of apointer, which is the same as zero unless theCPUsupports a special...