setbase

T3 setbase(int base);

The manipulator returns an object that, when extracted from or inserted into the stream str, calls str.setf(mask, ios_base::basefield), then returns str. Here, mask is determined as follows:

• If base is 8, then mask is ios_base::oct.
• If base is 10, then mask is ios_base::dec.
• If base is 16, then mask is ios_base::hex.
• If base is any other value, then mask is ios_base::fmtflags(0).