/in/foo.c:3:6: warning: return type of 'main' is not 'int' [-Wmain]
 void main(){
      ^~~~
/in/foo.c: In function 'main':
/in/foo.c:5:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[50]' [-Wformat=]
 scanf("%s",&s);
         ^
/in/foo.c:11:1: error: expected declaration or statement at end of input
 }
 ^
/in/foo.c:4:13: warning: variable 'd' set but not used [-Wunused-but-set-variable]
 char s[max],d[max];
             ^