How to use bitset, bitwise operator in c++, 비트셋, 비트연산자 사용하는 방법, 이진수 변환 방법, How to convert decimal to binary, binary to decimal
Java ( Here ) not yet
bitset 초기화 방법 - 예제코드 확인
-> bitset<원하는 bit 사이즈> testBit(십진수)
Initialize bitset - check sample code
-> bitset<bit size you want> testBit(decimal number)
bitset 에서 정수로 변환
-> (int)(testBit.to_ulong())
bitset to integer
-> (int)(testBit.to_ulong())
bitset 그대로 출력할 경우, 정해둔 bit 사이즈의 이진수로 출력된다.
이진수의 맨 앞 1 앞부분은 0으로 채워진다. e.g. 00001010 (in 8 bit size)
정해둔 bit 사이즈를 초과하는 정수를 넣을 경우는, 초과한 만큼 이진수의 앞부분이 짤려서 출력된다.
If you just cout bitset, then we can see binary with bit size you set.
Zeros will be filled in front of first 1 in binary. e.g. 00001010 (in 8 bit size)
If decimal number is bigger than setting bit size, then front binary number will be deleted
#include <iostream>
#include <stdio.h>
#include <bitset>
using namespace std;
int main(int argc, char *argv[]) {
bitset<2> testBit2(7);
cout << testBit2 << endl;
cout << (int)(testBit2.to_ulong()) << endl << endl;
bitset<8> testBit8(100);
cout << testBit8 << endl;
cout << (int)(testBit8.to_ulong()) << endl << endl;
bitset<16> testBit16(100);
cout << testBit16 << endl;
cout << (int)(testBit16.to_ulong()) << endl << endl;
bitset<32> testBit32(100);
cout << testBit32 << endl;
cout << (int)(testBit32.to_ulong()) << endl << endl;
bitset<64> testBit64(100);
cout << testBit64 << endl;
cout << (int)(testBit64.to_ulong()) << endl << endl;
}
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