Learn copy constructor in C++ with example, 3 scenarios where it is invoked, note and important points. What is Copy Constructor in C++: The copy constructor is a constructor which initializes an object from an existing object of the same class as shown below. Syntax in C++: Considering an example of a Car class, here […]
kilometers to miles in C++
kilometers to miles in C++ with simple conversion formula 1 Kilometers = 0.621 miles. For example: Input: 10 kilometers Output: 6.21 miles Program will use unit formula to convert distance unit kilometers to mile. Example, 10 kilometers = —– miles? Since, 1 km = 0.621 miles hence, 10 km = 10*0.621 = 6.21 miles. C++ […]
C++ int to binary string function code
C++ int to binary string conversion program simple example with code documentation. This is custom function implementation example to convert int to binary string in C++. However, we can also use itoa c++ library function for the conversion . We will consider unsigned long, so, we can convert int to binary string from 0 to […]
C++ map::insert – Adding Key Value pair
C++ std::map::insert – Simple program example to add key value pair in a map. The map data structure stores key value pair. Here is how we declare a map contain int as key and string as value. std::map<int, std::string> m; Using the variable m, we call the insert() function. C++ map::insert Syntax std::pair <iterator,bool> insert( […]
C++ map update example
C++ map update – Simple program example to update value in map. To update an existing value in the map, first we will find the value with the given key using map::find() function. If the key exists, then will update it with new value. C++ map update example This example program has a key value […]
C++ map::find – Search Element | Check if key exists
C++ map :: find() function – Example to find an element by key into a map. Also, check if key exists into a map in C++ program. std::find function accept a key as an argument. So, pass the key to the find() function for which you want to get or check value in the map. […]
C++ string to int conversion – Including Test Cases
C++ string to int conversion with program example and multiple test cases to handle error checking string inputs with examples. Conversion example includes program with and without atoi function. C++ string to int conversion using atoi() function atoi() is the stdlib header file library function. If you are using “using namespace std;” then no need […]
C++ program to reverse sentence without reversing words
Program to reverse sentence without reversing words in C++ with simple algorithms using stack. This algorithm also handles spaces and special characters in the sentence or a given string. TEST CASES: Input: Hello World!!!Output: !!!World Hello Input: Hello World !!!Output: !!! World Hello Algorithm: Push spaces and each words in a stack and then pop […]
Extract words from string C++ program
Extract words from string C++ – This program example will extract every words including special characters from the string that contains spaces or multiple spaces etc. using C++ istringstream class. Assign input string to istringstream object and within a loop extract each word . for example, if the string is “hello world” then hello and […]
Count each word in a string C++ – Using map
C++ program to count each word in a string. STL std::map will be used to filter and count word occurrences in C++ program in the string. Note that this problem is different than count number of words in string in which we identify how many total words a string contains. In above problem each word […]