h. Using it would include a lot of unnecessary stuff and increases compilation time. Move lines down. toupper () is used for converting all the characters of a string into uppercase. Alt-Down. Option-Up. Run the server program first, followed by running the client program. Sphere Engine™. Follow us. Our online interpreter offers a simple Integrated Development Environment (IDE) for students and professionals. Loops come into use when we need to repeatedly execute a block of statements. Write, edit, and run your C code all in one place using the GeeksforGeeks C compiler. Time Complexity: The time complexity of Dijkstra’s algorithm is O (V^2). C++ Pointers. #include<iostream>: It is used as a stream. A real-life example of polymorphism is a person who at the same time can have different characteristics. C++ Online Compiler & Interpreter - Replit Code, create, and learn together with C++ Code, collaborate, compile, run, share, and deploy C++ and more online from your browser. Alt-Down. 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