/in/ex3.cpp: In function 'int main(int, char**)':
/in/ex3.cpp:8:14: error: unused parameter 'argc' [-Werror=unused-parameter]
 int main(int argc, char *argv[])
              ^~~~
/in/ex3.cpp:8:31: error: unused parameter 'argv' [-Werror=unused-parameter]
 int main(int argc, char *argv[])
                               ^
cc1plus: all warnings being treated as errors
/in/compile/Makefile:20: recipe for target 'ex3.o' failed
make: *** [ex3.o] Error 1