Question

List four C++ integral data types?

List three C++ floating point data types?

What is the smallest (least memory used) C++ data type that could be used to store the value 123.456?

What is the smallest (least memory used) C++ data type that could be used to store the value 1234567890.0987654321?

Can someone help me solve these?? Im lost. /.\ Medal goes to whoever helps! :D

Answer 1

1) char, short, int, long, long long
2) float, double, long double
3) int -> 32 Bit -> 4294967296 (short 16 Bit -> 65536
4) I think its double

Answer 2

Just test if 1234567890.0987654321 fits in a double. If not then its long double

Answer 3

depending on the OS the int could also have 64 Bits but that doesnt really matter