sumprod.cpp: In function `void complete_vector()': sumprod.cpp:10: pointer value used where a floating point value was expected sumprod.cpp:10: `sqrt' undeclared (first use this function) sumprod.cpp:10: (Each undeclared identifier is reported only once for each function it appears in.) sumprod.cpp:11: `i' undeclared (first use this function) sumprod.cpp:14: `n' undeclared (first use this function)