Real-time Debugging With Online GDB Compiler

online gdb My code works on an online compiler like online GDB But when i put it into eclipse it says The selection cannot be launched and there are no other selections

Chat; Login extras; Limitations; Caveats; Background; Privacy statement ? users online Logout; 10072 Open hangout; Open chat for current file -New tab  alloneonline I wanted to know the mistake I am doing in this programming as I am not able to execute it as I tried in online gdb #include > Int main() { int a,b