This has nothing to do with pythia8 or ROOT, this is basic C++ programming… So just google for it
OK
Thank you so much
i had modified sample program main02 to get its histogram output in root format .
after using
g++ -O2 -ansi -pedantic -W -Wall -Wshadow -I$PYTHIA8/include -I$ROOTSYS/include mainz02.cc -o mainz02
i don’t get any executable .
my program mainz02 is:
mainz02.cc (1.49 KB)
What is the output of your compilation line?
the output of my compilation line is too long.so i had copied it in a file attached below
com.dat (21.2 KB)
also my script pythia8.C(given in root/tutorials/pythia) is working by using