/in/foo.cc: In function 'int main()':
/in/foo.cc:9:11: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  if(a=0.00){
           ^
/in/foo.cc:14:9: warning: iteration 9 invokes undefined behavior [-Waggressive-loop-optimizations]
   num[i]=a;
   ~~~~~~^~
/in/foo.cc:7:15: note: within this loop
  for(int i=1;i<=10;i++){
              ~^~~~
/in/foo.cc:17:18: warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized]
     for(int j=1;j<=n;j++){
                 ~^~~