Std::string str1 = "Hello, world!" // initialize a string with a string literal To initialize the string with a value, use one of the following methods:.Std::string str // declare an empty string variable To declare a string variable, you can use the following syntax:.In C++, strings are objects of the std::string class that allow you to store and manipulate sequences of characters. How to Declare and Initialize Strings in C++? In the above example, the integer 50 is converted into a string by passing it as an argument to the lexical_cast operator. The following example illustrates the working of boost::lexical_cast to convert int to string in C++:Ĭout << "The string representation of the integer num is :" << str << "\n" It passes the integer 50 as an argument to the lexical_cast operator, which converts this integer into the corresponding string “50”. To convert an integer to a string, the argument should be an integer value. argument: This is the value that needs to be converted.To convert an integer to a string, you should specify the data type as a string. data-type: This is the type in which the argument needs to be converted.The syntax of the boost::lexical_cast method is: Note: You need to install the Boost libraries first, before executing this method to convert int to string in C++. This function is defined in the library “boost/lexical_cast.hpp” and can perform interconversions of different data types including float, integer, double, and string. The boost::lexical_cast method is another method to convert an integer into a string. The following example illustrates the working of to_string() function in C++: 10 is passed to the to_string() method which returns a corresponding string “10”. The variable holding an integer value i.e. This function returns a string object corresponding to the value passed as an argument. This numerical value can be of any data type, including integer, float, double, long double, etc. This function takes a numerical value as a parameter that has to be converted into a string.The to_string() method is included in the header file of the class string, i.e., or.String to_string (unsigned long long num) The syntax of the to_string() function is: This function is used to convert not only the integer but numerical values of any data type into a string. The next method in this list to convert int to string in C++ is by using the to_string() function. The integer 20 is first inserted into the object stream and then extracted to a string variable str. #include // header file for stringstreamĬout >” operators. The following example illustrates the working of stringstream class to convert int to string in C++: You insert the integer 20 into the string object str_s and extracted it to a string variable my_str, which eventually converts the integer 20 into the string “20”. “>”: This operator extracts the value of the stringstream object and stores it in a string variable on the right-hand side.string_object_name: This is the name of the stringstream object that was declared to perform the input/output operations on strings.The syntax to insert and extract data using these operators is: Operator “>” operators can convert int to string in C++.Operator “>”: The “>” operator in the stringstream class is used to read or extract formatted data from a stream object.It includes the following basic methods in the stringstream class: The stringstream class is included in the “sstream” header file. The stringstream class allows input/output operations on streams based on strings. In this section, you will look into all these three methods in detail. ![]() There are three different ways in which you can perform conversion of an int to string in C++. In this article, you will explore how you can convert an integer into a string in C++. In the above example, the first method that uses a string operation to print the current date is more convenient than the second method which uses an arithmetic operation. Today's date is: 31/05/21 Using Arithmetic Operation:Ĭout << "Today's date is: 31/05/" << formattedYear Output: Using String Operation:Ĭout << "Today's date is: 31/05/" << year.substr(2) Output: ![]() For instance, consider the following example to print the current date. Sometimes arithmetic operations become a tedious task compared to string operations. Most of the programming languages provide inbuilt methods to perform explicit type conversion.Ĭonverting data from an integer format to a string allows you to perform various string operations on the data. You can do the conversion of data types in two ways: Implicit type conversion (done by the compiler) and Explicit type conversion (done manually). There are several cases where you need to convert a variable of one data type to another. Data type conversion is a common process that is widely used in programming.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |