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C++ Programming

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  • Next generation of IBM C/C++ and Fortran compilers are now available on IBM AIX – IBM Developer

    In February 2020, IBM announced the intention to adopt open source LLVM infrastructure for the next generation of IBM XL C/C++ and Fortran compilers. As an active sponsor and strong supporter of LLVM, IBM is committed to bring the benefits and innovations from the LLVM community to our enterprise clients.

    With the launch of IBM Power10, the IBM XL C/C++ and Fortran compilers have been modernized and now rebranded to IBM Open XL C/C++ for AIX and IBM Open XL Fortran for AIX. IBM Open XL C/C++ and Fortran for AIX 17.1.0 combine Clang/LLVM technology with IBM’s industry-leading optimizations.

  • C++ String to double Conversion

    in C++, you will not end up with 49.12. In fact, the compiler should issue an error message. To have the result, 49.12, “14.25” has to be converted to a number type of double or float, and “34.87” has to be converted to a number type of double or float.

    The title of this tutorial is “C++ String to Double Conversion”. Is your aim to convert string to double; or to do all of the following, which are related?

  • C++ string append

    The word “append” means to add something at the back of another thing. A string can be declared in C++ in two main ways. Declaring a string as an array-of-chars or as a constant-pointer-to-chars is one way. Instantiating a string object data structure from the string class is another way. To instantiate a string object from the string class, the C++ string library has to be included in the program.

  • C++ String trim Methods

    C++ does not have a function to trim a string. There is a subject in computer programming called, Regular Expressions, abbreviated regex. This subject has schemes, which enable the programmer to search for a sub-string in a target string and replace the sub-string found. The sub-string found can be replaced with nothing, and so erasing it.

    The search-and-replace with nothing idea can be used to trim a string. So look for all white space characters in front of the string and all white-space characters behind the string, and replace them with nothing. Luckily, C++ has a regex library, which has to be included in the program to do this.

  • C++ String Replace

    C++ String Replace deals with locating a particular sub-string in a target string and then replacing it. A string can be created in two main ways: using a constant character pointer (char array) or instantiating it from the string class. The string class has a replace() member function. This does the locating and replacement. Locating and replacing is done with instantiated string objects and not strings created using a constant character pointer.

    The string object is a data structure, and its main component is a list. Each cell of this list has a character. The total sequence of characters forms the literal string. Each character position can be accessed by an index or by an iterator. Index counting begins from zero. An iterator is an elaborated pointer.

    The C+ string class has different variants of the replace() member function. Such a set of functions are called overloaded functions. This article explains how to use different overloaded string replace() member functions.

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today's howtos

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