Apps similar to Cling include Ch, which has a free version. Other options are Interactive GCC (IGCC) and CINT. In total there are three apps like Cling for Linux, Mac and Windows.
Ch is a C/C++ interpreter and scripting language environment used by teachers, students, engineers and scientists around the world to learn math, numerical computing, C/C++, and write cross-platform code and embedded scripts quickly and efficiently.
IGCC is a real-eval-print loop (REPL) simulator for C/C++ programmers. It allows you to type C++ commands which are immediately compiled and executed. Underneath it uses the normal GCC exe for compiling.
CINT is an interpreter for C and C++ code. It is useful e.g. for situations where rapid development is more important than execution time. Using an interpreter the compile and link cycle is dramatically reduced facilitating rapid development.
