/in/foo.c: In function 'main':
/in/foo.c:12:17: warning: format '%c' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
         scanf("%c",&A[i]);
                 ^
/in/foo.c: In function 'point11':
/in/foo.c:30:16: warning: comparison between pointer and integer
         if(A[i]=="\n") ;
                ^~
/in/foo.c:30:16: warning: comparison with string literal results in unspecified behavior [-Waddress]
/in/foo.c: In function 'point21':
/in/foo.c:50:16: warning: comparison between pointer and integer
         if(A[i]=="\n") ;
                ^~
/in/foo.c:50:16: warning: comparison with string literal results in unspecified behavior [-Waddress]