/in/foo.c: In function 'main':
/in/foo.c:5:27: warning: unused variable 'b' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
                           ^
/in/foo.c:5:25: warning: unused variable 'k' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
                         ^
/in/foo.c:5:23: warning: unused variable 'd' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
                       ^
/in/foo.c:5:21: warning: unused variable 'j' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
                     ^
/in/foo.c:5:19: warning: unused variable 'i' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
                   ^
/in/foo.c:5:8: warning: unused variable 'a' [-Wunused-variable]
  int n,a[200]={0},i,j,d,k,b[100]={0};
        ^