foo.cc: In function ‘int main()’:
foo.cc:7:21: error: incompatible types in assignment of ‘int’ to ‘int [10005]’
    7 |                 a[i]=i;
      |                 ~~~~^~
foo.cc:8:22: error: invalid conversion from ‘int*’ to ‘int’ [-fpermissive]
    8 |         for(int i=a[n];;i++){
      |                   ~~~^
      |                      |
      |                      int*