my_bc takes in an expression consisted of the operators *, /, +, -, % and numeric literals. The program then parsers through the input and evaluates result of the mathematical expression.
Floating point numbers are not supported.
make
make clean
./bin/my_bc "3+2*2"
Parsing is achieved via a recursive descent parser implementation. Results are stored in an AST and evaluted by recursing through the tree.
Though not part of the current implementation, a printing is available to vizualize the resulting tree. Printing is possible with the following:
tree_t ast;
ast.root = parser.parse(&parser, &tokenizer, argv[1]);
ast.print(&ast);
% in C is a remainder operator as defined by C99. So for negative numbers, operations such as -77 % 2 would result in -2. The modulo operation, however, would equate to 3.
In my_bc the % refers to modulo operator, not the remainder operator.