Preenche e escreve o buffer de 1byte em "filename.txt"

Adiciona o valor bit para o caracter menos significante do buffer, faz shift e volta a adicionar o bit. Com bit=1 (constante) ficam todos os bits do buffer a 1.

ex1/testewb.cpp

@@ -0,0 +1,40 @@
+#include <iostream>
+#include <fstream>
+
+
+using namespace std;
+
+
+int main (){  /* Write the least significant bit of the argument */
+
+ofstream ofs ("filename.txt");
+unsigned char buffer = 0x00;
+int nbits = 0;
+int bytes = 2;
+int nbytes = 0;
+unsigned char bit = 1;
+unsigned char comp = 0xFF;
+
+
+while (nbytes < bytes){
+    int nbits = 0;
+    for(int i = 0; i < 8; i++){
+           buffer = ((buffer << 1) | bit);  ///shift 1 possição e set the last bit of the buffer to bit
+            nbits++;
+}
+
+cout << "teste" << "buffer= "<< buffer << "nbits =" << nbits << endl;
+cout << "tamanho do buffer= " << sizeof (buffer) << "bytes" << endl;
+
+    if(nbits = 8)
+        {
+        ofs << buffer;
+        ofs.flush();
+        buffer = 0;
+        nbytes++;
+    }
+
+  }
+ofs.close();
+return 0;
+}