/in/foo.c: In function 'main':
/in/foo.c:8:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
  scanf("%s",&s);
          ^
/in/foo.c:5:20: warning: unused variable 'x' [-Wunused-variable]
 {int n,i,j,jw,flag,x,m,t,k=0;
                    ^
/in/foo.c:5:10: warning: unused variable 'j' [-Wunused-variable]
 {int n,i,j,jw,flag,x,m,t,k=0;
          ^