Almost. It's casting exec to a pointer to a function that "returns" void and takes no arguments and then calling the function. Search for "C right-left rule" (w

Almost. It's casting exec to a pointer to a function that "returns" void and takes no arguments and then calling the function. Search for "C right-left rule" (without quotes) to see some hints on how to read complex declarations (mostly applies to casting too). I like http://ieng9.ucsd.edu/~cs30x/rt_lt.rule.html http://ieng9.ucsd.edu/~cs30x/rt_lt.rule.html