/in/foo.c: In function 'main':
/in/foo.c:21:37: warning: unused variable 'q' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                                     ^
/in/foo.c:21:35: warning: unused variable 'p' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                                   ^
/in/foo.c:21:33: warning: unused variable 'o' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                                 ^
/in/foo.c:21:31: warning: unused variable 'l' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                               ^
/in/foo.c:21:29: warning: unused variable 'h' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                             ^
/in/foo.c:21:27: warning: unused variable 'g' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                           ^
/in/foo.c:21:25: warning: unused variable 'f' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                         ^
/in/foo.c:21:23: warning: unused variable 'e' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                       ^
/in/foo.c:21:21: warning: unused variable 'd' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                     ^
/in/foo.c:21:19: warning: unused variable 'c' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                   ^
/in/foo.c:21:17: warning: unused variable 'b' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
                 ^
/in/foo.c:21:15: warning: unused variable 'a' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
               ^
/in/foo.c:21:13: warning: unused variable 'm' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
             ^
/in/foo.c:21:11: warning: unused variable 'n' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
           ^
/in/foo.c:21:9: warning: unused variable 'k' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
         ^
/in/foo.c:21:7: warning: unused variable 'j' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
       ^
/in/foo.c:21:5: warning: unused variable 'i' [-Wunused-variable]
 int i,j,k,n,m,a,b,c,d,e,f,g,h,l,o,p,q;
     ^