shift ? it's a "trick"!

[VladLio]

// C++ Program to demonstrate use
// of left shift operator
#include
using namespace std;

// Driver code
int main()
{

unsigned char a = 156,    // a = 156(10011100),   // The result is (00111000)  ??? = 8 00001000 ???
cout << "a<<1 = " << (unsigned char)(a << 1) << endl;

}
Why 8 is the result of (unsigned char)(a << 1) with ( a initially = to 156) !!!
... Same result with an union Ulong / UChar[4] !!! , shift on the Ulong ...... ?????

OOPs , eureka, 56 With union, AND << cout (INT)value ( numeric) 8 in "char". !!!! Thanks your applause !