/in/foo.cc:5:3: error: expected initializer before 'float'
   float a,b;
   ^~~~~
/in/foo.cc:6:3: error: 'cin' does not name a type
   cin >>a>>b;
   ^~~
/in/foo.cc:7:3: error: 'cout' does not name a type
   cout<<fixed<<setprecision(2)<<a*(1+b/100)<<a*(1+b/100)*(1+b/100)<<a*(1+b/100)*(1+b)*(1+b)<<a*(1+b)*(1+b)*(1+b)*(1+b)<<a*(1+b)*(1+b)*(1+b)*(1+b)*(1+b);
   ^~~~
/in/foo.cc:8:1: error: expected declaration before '}' token
 }
 ^