/in/foo.c: In function 'main':
/in/foo.c:5:21: warning: unused variable 'g' [-Wunused-variable]
     int a,b,c,d,e,f,g,num;
                     ^
/in/foo.c:5:19: warning: unused variable 'f' [-Wunused-variable]
     int a,b,c,d,e,f,g,num;
                   ^
/in/foo.c:5:17: warning: unused variable 'e' [-Wunused-variable]
     int a,b,c,d,e,f,g,num;
                 ^