/in/foo.c: In function 'main':
/in/foo.c:12:8: error: expected expression before '{' token
   C[5]={i+1-j};}
        ^
/in/foo.c:13:14: error: 'k' undeclared (first use in this function)
  printf("%d",k);
              ^
/in/foo.c:13:14: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:4:21: warning: variable 'C' set but not used [-Wunused-but-set-variable]
  int S[200],i=0,j=0,C[5];
                     ^