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Estimated hours taken: 0.25 Branches: main Fix a bug where the Mercury calls C++ sample was not linking with the C++ library. This worked, because the sample didn't actually make use of the C++ library, but failed as soon as users tried to extend the sample to use with their real C++ programs. samples/c_interface/mercury_calls_cplusplus/cpp_main.cc: Use the C++ standard library's stream I/O, rather than printf(). samples/c_interface/mercury_calls_cplusplus/Mmakefile: Make sure that we link with the C++ standard library. Also, comment out the old hack that worked around a g++ 2.7 bug which is fixed in g++ 2.95.
This directory contains some example Mercury programs. hello.m "Hello World" in Mercury. cat.m An implementation of a simple version of the standard UNIX filter `cat', which just copies its input files or the standard input stream to the standard output stream. sort.m An implementation of a simple version of the standard UNIX filter `sort', which reads lines from its input files or the standard input stream, sorts them, and then writes the result to the standard output stream. calculator.m A simple four-function arithmetic calculator, with a parser written using the Definite Clause Grammar notation. calculator2.m A simple four-function arithmetic calculator, which uses the parser module in the standard library with a user-defined operator precendence table. committed_choice.m An example illustrating committed-choice nondeterminism in Mercury. interpreter.m An simple interpreter for definite logic programs. A demonstration of meta-programming in Mercury. expand_terms.m Another example meta-program, showing how to emulate Prolog's `expand_term' mechanism. e.m A small program which calculates the base of natural logarithms to however many digits you choose. It illustrates one way to achieve lazy evaluation in Mercury. Mmakefile The file used by `mmake', the Mercury Make program, to build the programs in this directory. The `solutions' sub-directory contains some examples of the use of nondeterminism, showing how a Mercury program can compute - one solution, - all solutions, or - some solutions (determined by a user-specified criteria) for a query which has more than one logically correct answer. There are also some sub-directories which contain examples of multi-module Mercury programs: diff This directory contains an implementation of a simple version of the standard UNIX utility `diff', which prints the differences between two files. c_interface This directory contains some examples of mixed Mercury/C/C++/Fortran programs using the C interface. rot13 This directory contains a few implementations of rot-13 encoding. muz This directory contains a syntax checker / type checker for the specification language Z.