convert c program to c++ online

To convert a C program to C++, you can follow these steps:

Rename the file extension from .c to .cpp. This will inform the compiler that the file contains C++ code.
Replace the stdio.h header file with iostream for input and output operations. This is the C++ equivalent of the C standard input/output library.
Replace the printf function with std::cout for output. The cout object is part of the std namespace and is used to display output to the console.
Replace the scanf function with std::cin for input. The cin object is part of the std namespace and is used to read input from the console.
If your C program uses any C library functions, check if there is an equivalent C++ function available. C++ provides many standard library functions that have a similar purpose to their C counterparts.
If your C program uses global variables, consider encapsulating them within a class or using namespaces to maintain good object-oriented programming practices.
If your C program uses malloc to allocate memory, consider using new and delete in C++. The new operator is used to allocate memory dynamically, while delete is used to deallocate it.
If your C program uses structures, consider using C++ classes to encapsulate data and functions together.
If your C program uses function prototypes, you can either remove them or update them to use C++ function prototypes. However, in C++, it is common to define functions before they are used, so you may not need function prototypes at all.
Finally, compile the modified C++ file using a C++ compiler.

By following these steps, you can convert a C program to C++ and take advantage of C++'s additional features and object-oriented programming capabilities.