/in/foo.cc: In function 'int main()':
/in/foo.cc:4:8: warning: unused variable 'a' [-Wunused-variable]
  int n,a=1,b=2,c=5,x,y,z,max=0;
        ^
/in/foo.cc:4:12: warning: unused variable 'b' [-Wunused-variable]
  int n,a=1,b=2,c=5,x,y,z,max=0;
            ^
/in/foo.cc:4:16: warning: unused variable 'c' [-Wunused-variable]
  int n,a=1,b=2,c=5,x,y,z,max=0;
                ^