In this article we will be discussing the working, syntax and examples of log() function in C++ STL.What is the log() function?log() function is an inbuilt function in C++ STL, which is defined in header file. log() returns complex natural logarithmic value of a complex value. The difference between the log() in math header file and log() of complex header file is that it is used to calculate the complex logarithmic where log() of math header file calculates normal logarithmic value.Syntaxtemplate complex log(const complex& x);ParametersThis function accepts one parameter which is a complex value whose log we have to ... Read More

In this article we will be discussing the working, syntax and examples of match_results::size() function in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results::size()?match_results::size() function is an inbuilt function in C++ STL, which is defined in header file. size() is used to get the number of matches of the match_results object associated with it. This function returns a size_type value that is the number ... Read More

In this article we will be discussing the working, syntax and examples of match_results::prefix() and match_results::suffix() functions in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results:: prefix()?match_results::prefix() function is an inbuilt function in C++ STL, which is defined in header file. prefix() is used to get the preceding match_results of the object associated with the function. This function returns the reference of the succeeding ... Read More

In this article we will be discussing the working, syntax and examples of match_results operator ‘[ ]’ in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results operator ‘[ ]’Match_results operator [] is a reference operator which is used to directly refer to i-th position of a match_results. Operator [] returns i-th match position of the object associated. This operator comes in handy when we have ... Read More

In this article we will be discussing the working, syntax and examples of match_results operator ‘=’ in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results operator ‘=’Match_results operator = is an equality operator which is used to assign the value to a match_results. Operator = is used to copy or move the elements from one match_results object to another.Syntaxmatch_results1 = (match_results2);ParametersAnother match_results object whose data ... Read More

In this article we will be discussing the working, syntax and examples of match_results::length() function in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results::length()?match_results::length() function is an inbuilt function in C++ STL, which is defined in header file. length() is used to check the length of the n-th match in the match_results object associated with it. length() accepts a parameter which is the match ... Read More

In this article we will be discussing the working, syntax and examples of match_results::empty() function in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results::empty()?match_results::empty() function is an inbuilt function in C++ STL, which is defined in header file. empty() checks whether the smatch object which is associated is empty or having some match values in it. empty() returns true if the match object is ... Read More

In this article we will be discussing the working, syntax and examples of match_results::cbegin() and match_results::cend() functions in C++ STL.What is a match_results in C++ STL?std::match_results is a specialized container-like class which is used to hold the collection of character sequences which are matched. In this container class a regex match operation finds the matches of the target sequence.What is match_results::cbegin()?match_results::cbegin() function is an inbuilt function in C++ STL, which is defined in header file. This function returns the constant iterator which is pointing to the first element in the match_results container. Constant iterator can’t be used to do ... Read More

In this article we will be discussing the working, syntax and examples of std::is_standard_layout template in C++ STL.is_standard_layout is a template which comes under the header file. This template is used to check whether the given type T is a standard layout or not.What is a standard layout in C++?Standard Layout type is a type in which is of simple linear structure (like we see in array) and access control which can be easily used to communicate with the program written in other programming languages. This is a type which is written with the idea of one code for ... Read More

Given the task is to find the memory range of the different data types, that what range of value a data type can store the value from minimum value to maximum value. There is memory range of data type from in which value of data can be stored. It is difficult to remember the large range of value so C++ has macros for represent these numbers, from macros these large numbers can be directly assigned to variable without typing the whole Number range.Example‘char’(signed) is character data type and has a range of -128 to +128 and macro for minimum value, ... Read More