/in/foo.cc: In function 'int main()':
/in/foo.cc:12:30: error: expression list treated as compound expression in functional cast [-fpermissive]
   12 |         cout<<float(x,a,b,c,d);
      |                              ^
/in/foo.cc:12:21: warning: left operand of comma operator has no effect [-Wunused-value]
   12 |         cout<<float(x,a,b,c,d);
      |                     ^
/in/foo.cc:12:30: warning: right operand of comma operator has no effect [-Wunused-value]
   12 |         cout<<float(x,a,b,c,d);
      |                              ^
/in/foo.cc:12:30: warning: right operand of comma operator has no effect [-Wunused-value]
/in/foo.cc:12:30: warning: right operand of comma operator has no effect [-Wunused-value]