/in/foo.c: In function 'f':
/in/foo.c:86:8: warning: unused variable 'k' [-Wunused-variable]
  int j,k;
        ^
/in/foo.c:86:6: warning: unused variable 'j' [-Wunused-variable]
  int j,k;
      ^
/in/foo.c: In function 'main':
/in/foo.c:106:29: warning: unused variable 'flag' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
                             ^~~~
/in/foo.c:106:24: warning: unused variable 'l' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
                        ^
/in/foo.c:106:22: warning: unused variable 'k' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
                      ^
/in/foo.c:106:20: warning: unused variable 'j' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
                    ^
/in/foo.c:106:14: warning: unused variable 'm' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
              ^
/in/foo.c:106:12: warning: unused variable 'd' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
            ^
/in/foo.c:106:10: warning: unused variable 'c' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
          ^
/in/foo.c:106:8: warning: unused variable 'b' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
        ^
/in/foo.c:106:6: warning: unused variable 'a' [-Wunused-variable]
  int a,b,c,d,m,n,i,j,k,l,ss,flag;
      ^