I don't know how to correct the code of function 4 & 5.
pragma solidity ^0.4.4;
contract C {
bytes1 b10 = 0x6c;// l-> 0110 1100 6c转换为10进制-》12*16^0+6*16^1=108
bytes1 b11 = 0x69;
function test1() constant returns (bytes1) {
return b10 & b11;
}
function test2() constant returns (bytes1) {
return b10 | b11; //或
//0110 1100 ->0x6c
//0110 1001->0x69
// 0110 1101(上下10对应的时候是1真)->0x6d
}
function test3() constant returns (bytes1) {
return ~b10;
//0110 1100 ->0x6c
//->1001 0011 ->0x93
}
**function test4() constant returns (bytes1) {
return b10 << 1;
//0110 1100 ->0x6c
//->1101 1000->0xd8
}
function test5() constant returns (bytes1) {
return b10 >> 1;
//0110 1100 ->0x6c
//->0011 0110->0x36
}**
}