Introduction to bitwise with cpp

theory/bitwise.cpp

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+#include <iostream>
+#include <bitset>
+
+int main(void) {
+
+    // Printing integers in Binary
+    unsigned short int data {0b11111110}; // 254
+    unsigned short int a{0b01000100}; // testing negation
+    unsigned short int b = ~a;
+
+    std::cout << "Section 1: Printing integers in binary or other" << std::endl;
+
+    std::cout << "a value: " << std::bitset<8>(a) << std::endl;
+    std::cout << "~a(b) value: " << std::bitset<8>(b) << std::endl;
+
+    std::cout << "data (dec): " << std::dec << data << std::endl;
+    std::cout << "data (hex): " << std::hex << std::showbase << data << std::endl;
+    std::cout << "data (bin): " << std::bitset<8>(data) << std::endl;
+
+    std::cout << std::endl;
+
+    // Shift operators (just fot int and char)
+
+    /*
+    
+    << shift to the left (same as to multiply vy 2)
+    >> shift to the right (same as to divide by 2)
+
+    obs: you can't get back a data that was lost by shifting using
+    the inverse operation
+    
+    */
+
+   unsigned short int value {0b00001000};
+
+   std::cout << "Section 2: Shifting Operations" << std::endl;
+
+   // Printing value before left shift
+   std::cout << "Value (bin): " << std::bitset<8>(value) << std::endl;
+   std::cout << "Value (dec): " << std::dec << value << std::endl;
+
+   // Doing explicit cast because CPU will recognize like a int
+   value = static_cast<unsigned short int>(value << 1); // just change to see what happen if shift to right
+
+   std::cout << "Value (bin): " << std::bitset<8>(value) << std::endl;
+   std::cout << "Value (dec): " << std::dec << value << std::endl;
+
+   std::cout << std::endl;
+
+    // Logical Bitwise operators
+
+    /*
+    
+    & (AND) 
+    | (OR)
+    ^ (XOR)
+    ~ (NOT)
+
+    */
+
+   // Assigments Operators
+
+   /*
+   
+   >>= 
+   <<= 
+   |= 
+   &= 
+   ^= 
+
+
+   */
+
+  unsigned short int compare {0b00011111};
+  unsigned short int result;
+
+  std::cout << "Section 3: Logical and assigments operators" << std::endl;
+
+  // &= compare
+  result = static_cast<unsigned short int>(value &= compare);
+  std::cout << "Value (bin): " << std::bitset<8>(result) << std::endl;
+  std::cout << "Value (dec): " << std::dec << result << std::endl;
+
+  // |= compare
+  result = static_cast<unsigned short int>(value |= compare);
+  std::cout << "Value (bin): " << std::bitset<8>(result) << std::endl;
+  std::cout << "Value (dec): " << std::dec << result << std::endl;
+
+  // ^= compare
+  result = static_cast<unsigned short int>(value ^= compare);
+  std::cout << "Value (bin): " << std::bitset<8>(result) << std::endl;
+  std::cout << "Value (dec): " << std::dec << result << std::endl;
+
+  std::cout << std::endl;
+
+  // Masks
+
+  /*
+  
+  Highlight position for bit of interest with a 1, mask other positions
+  with 0
+  
+  */
+
+}
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