Additions and updates in 1sem/PB

1sem/programming basics/z15/43.cpp

@@ -0,0 +1,28 @@
+// pb_z15_43.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+#include <climits>
+
+using namespace std;
+
+void reverse_uchar(std::iostream &ost);
+
+int main() {
+    fstream iof("out.bin", ios::in|ios::out|ios::binary);
+    if (!iof.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    reverse_uchar(iof);
+    return 0;
+}
+
+void reverse_uchar(std::iostream &ost) {
+    unsigned char cval = UCHAR_MAX;
+    for (int i = 0; i <= cval; i++) {
+        ost << cval--;
+    }
+}

1sem/programming basics/z15/44.cpp

@@ -0,0 +1,30 @@
+// pb_z15_44.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+void uchar_add(std::iostream &ost, unsigned char v);
+
+int main() {
+    fstream iof("out.bin", ios::in|ios::out|ios::binary);
+    if (!iof.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    unsigned char v;
+    cout << "Char >>>";
+    cin >> v;
+    uchar_add(iof, v);
+    return 0;
+}
+
+void uchar_add(std::iostream &ost, unsigned char v) {
+    while (!ost.eof() && ost.good()) {
+        unsigned int out = (unsigned char)ost.get() + v;
+        ost << (unsigned char)(out > 255? char(255) : char(out));
+    }
+}