C + + three binary formats

Source: C + + Primer Plus

Commonly used binary binary, octal, decimal, hexadecimal, in C + + header file iostream In addition to provide the Endl control, but also provides control of the control, (without binary), respectively, is the octal (Oct), decimal (dec), Hex (hex), The default is the decimal output, and if we modify the binary, the original binary is valid until it is modified again.

Example:

#include <iostream>using namespacestd;intMain () {intA= -, b= the; cout<<oct;//Modify to octalcout<<a<<Endl; cout<<b<<Endl; cout<<"*******"<<Endl; cout<//Modify to hexadecimalcout<<a<<Endl; cout<<b<<Endl; cout<<"*******"<<Endl; cout<<dec;//change back to decimalcout<<a<<Endl; cout<<b<<Endl; return 0; } 

Output:

 + *******1a4c*******

C + + three binary formats