foo.cc:4:1: error: ISO C++ forbids declaration of ‘ouputs’ with no type [-fpermissive]
    4 | ouputs(int n,int a)
      | ^~~~~~
foo.cc: In function ‘int ouputs(int, int)’:
foo.cc:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
   24 | }
      | ^
foo.cc: In function ‘int main()’:
foo.cc:27:17: warning: unused variable ‘j’ [-Wunused-variable]
   27 |         int n,i,j,a;
      |                 ^
foo.cc:27:19: warning: unused variable ‘a’ [-Wunused-variable]
   27 |         int n,i,j,a;
      |                   ^