aggiungo anche il log di compilazione

log di compilazione

Compilatore: Default compiler
Building Makefile: "C:\Dev-Cpp\Makefile.win"
Esecuzione di make...
make.exe -f "C:\Dev-Cpp\Makefile.win" all
g++.exe -c double.cpp -o double.o -I"C:/Dev-Cpp/lib/gcc/mingw32/3.4.2/include" -I"C:/Dev-Cpp/include/c++/3.4.2/backward" -I"C:/Dev-Cpp/include/c++/3.4.2/mingw32" -I"C:/Dev-Cpp/include/c++/3.4.2" -I"C:/Dev-Cpp/include" double.cpp:8: error: expected unqualified-id before '>' token
double.cpp:8: error: expected `,' or `;' before '>' tokenmake.exe: *** [double.o] Error 1Esecuzione terminata

totali errori 2