I want to change :
int i = libfnc1();
float j = libfnc2();
libfnc3();
to
int i = lib::libfnc1();
float j = lib::libfnc2();
lib::libfnc3();
using :s
I want to do somthing like :s/libfnc[0-9]/lib::**MATCHED**/g
but I haven't found what to put in place of MATCHED