Compiling C and C++ programs

1. Workstations:
   Without specifying an output file name
   • C programs: gcc filename.c
   • C++ programs: g++ filename.cpp
   • Run the executable: ./a.out
   • NOTE, to compile with math functions (sin, cos, sqrt, etc) use -lm to link the math library:
     gcc filename.c -lm

     Specifying the output filename

   • C programs: gcc -o filename filename.c
   • C++ programs: g++ -o filename filename.cpp
   • Run the executable: ./filename

2. Cray SV1
   • ssh cray
   • Edit on the SV1 using vim or emacs
   • OR: Edit on your workstation and use gftp to transfer source files.
     With gftp choose SSH2 as the protocol (upper right on the gftp window)

     Without specifying an output filename:

   • C programs: cc filename.c
   • C++ programs: CC filename.cpp
   • Run the executable with: ./a.out

     Specifying an output filename:

   • C programs: cc -o filename filename.c
   • C++ programs: CC -o filename filename.cpp