/in/foo.c: In function 'main':
/in/foo.c:10:7: error: invalid operands to binary ^ (have 'float' and 'int')
   y=(x^2)*2+4*x-5;
       ^
/in/foo.c:12:16: error: invalid operands to binary ^ (have 'float' and 'int')
      y=(5*x+10)^(1/2);
        ~~~~~~~~^
/in/foo.c:14:6: error: invalid operands to binary ^ (have 'float' and 'int')
   y=x^3;
      ^