Hello, I created this repo for practice and because I need to work on graphs at the university on a regular basis.
All files have in common, that all memory will be free'd, when a malloc or realloc call fails.
To test that all memory will be free'd, a special mock for malloc and realloc
has been created. They can be found in test.c.
To create the binaries for the tests use make test.
The usage of valgrind is recommended, to ensure that there are no memory
leakes.
helpers.h/helper.c contain some definitions and functions that are frequently needed and/or do not fit into a particular exercise or module.
read_line is similar to get_line, however it only uses parts of the standard library. get_ul is a variadic function that returns n unsigned long values from a line it reads from stdin (using read_line). This functions aim at providing an easy way to get integer values from user input in a safe way, without using third party extensions like getline (which is POSIX standard, but not yet part of every standard library). Compared to scanf, get_ul is rather strict when comes to input format, it doesn't accept non-numeric values and the line must contain exactly n values. It uses strtoul and hence accepts negative values (converting them to unsigned long).