on changing paradigm of assign call

i tried to "design" well a function definition
and meed terrible stall i would say in thsi - dont know how to
do it  though i think few years on this
(the probl;ematic is especially this returned values part)
as its go so hard i began to think if this paradigm of calls is not just wrong and some somewhat new idea come to me (though partially i was
  thinking on it)
  in fact i fint annoying this form
  int x = foo()
  annoying is especially this "=" sign as this is not quite assignment imo
  other annoying think is thet you need to define x at all
  and maybe this is a problem or its part
  instead of
  int x = add(2,3)
  print(x)
  maybe it should be
  add(2,3)
  print(add)
  i mean the function name without the () should just represent the
  return value so you no need to asign it
  present c allows  print(add(2,3))
  but disalows to reuste it (and assign etc/et more
  im close to think it definitely should
  i mean
  strlen("sjsbsjbhs"")
  printf("%d", strlen)
  obviously some names could maybe not fit like
  find_character_position(txt, 'x');

>

  print(find_character_position);
  it should be moer lieke "found"
  but i think it could be resolved by allowing to define this
  int found  find_character_position(char* txt, char c);
  {
    //...
    // or return int found; //something liek that liek defining structure neme
  }
  then this found name should be avaliable to caller
  so
  find_character_position(txt, 'x');
  if(found>=0)....
or
  sumarize(2,3,3,2,2,3)
  if(sum<10) ...
  those function call asigments are probably some kind pf mistake
  (though it looks a bit weird not to do that)