/in/foo.cc: In function 'int main()':
/in/foo.cc:54:5: error: expected ';' before 'for'
     for(int i=0;i<n;i++){
     ^~~
/in/foo.cc:53:19: warning: value computed is not used [-Wunused-value]
     scanf("%d",&n)!=EOF
                   ^
/in/foo.cc:54:17: error: 'i' was not declared in this scope
     for(int i=0;i<n;i++){
                 ^