/in/foo.c: In function 'main':
/in/foo.c:8:5: warning: unused variable 't' [-Wunused-variable]
 int t=n;
     ^
/in/foo.c:5:11: warning: unused variable 'j' [-Wunused-variable]
 int n,k,i,j=1,m;
           ^
/in/foo.c:5:9: warning: unused variable 'i' [-Wunused-variable]
 int n,k,i,j=1,m;
         ^