#HOW TO EXECUTE PROGRAMS
##To execute a lex program gedit filename.l //Type program and save lex filename.l cc lex.yy.c -ll ./a.out
##To execute a yacc program gedit filename.l //Type program and save gedit filename.y //Type program and save lex filename.l yacc -d filename.y cc lex.yy.c y.tab.c -ll ./a.out
##To execute a shell program gedit filename.sh //Type program and save sh filename.sh (If arguments are to be passed) sh filename.sh arg1 arg2.... argn ./a.out
##To execute a C program gedit filename.c //Type program and save cc filename.c ./a.out
##To execute and run a multi-threaded program using OpenMP gedit filename.c //Type program and save cc -fopenmp filename.c ./a.out
##To execute a C++ program gedit filename.cc //Type program and save g++ filename.cc ./a.out