Hi Linux Gurus I was compiling a C++ program using g++ compiler. I got the following error while compiling /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/cstdlib:135: error: â::systemâ has not been declared. Sys info: 1) ubuntu fiesty fawn(7.04) 2) gcc : 4.1.2 Waiting for reply. Thanks & regards Amol Bhor.