added patch file for exercise 110

patches/patches/110_bit_manipulation3.patch

@@ -0,0 +1,56 @@
+--- exercises/110_bit_manipulation3.zig	2025-02-08 11:52:35.609300707 -0800
++++ answers/110_bit_manipulation3.zig	2025-02-08 13:00:15.414038314 -0800
+@@ -108,7 +108,7 @@
+     PORTB = 0b1100;
+     print("  {b:0>4} // (initial state of PORTB)\n", .{PORTB});
+     print("^ {b:0>4} // (bitmask)\n", .{0b0101});
+-    PORTB ^= (1 << 1) | (1 << 0); // What's wrong here?
++    PORTB ^= (1 << 2) | (1 << 0);
+     checkAnswer(0b1001, PORTB);
+ 
+     newline();
+@@ -116,7 +116,7 @@
+     PORTB = 0b1100;
+     print("  {b:0>4} // (initial state of PORTB)\n", .{PORTB});
+     print("^ {b:0>4} // (bitmask)\n", .{0b0011});
+-    PORTB ^= (1 << 1) & (1 << 0); // What's wrong here?
++    PORTB ^= (1 << 1) | (1 << 0);
+     checkAnswer(0b1111, PORTB);
+ 
+     newline();
+@@ -170,7 +170,7 @@
+     PORTB = 0b1001; // reset PORTB
+     print("  {b:0>4} // (initial state of PORTB)\n", .{PORTB});
+     print("| {b:0>4} // (bitmask)\n", .{0b0100});
+-    PORTB = PORTB ??? (1 << 2); // What's missing here?
++    PORTB = PORTB | (1 << 2);
+     checkAnswer(0b1101, PORTB);
+ 
+     newline();
+@@ -178,7 +178,7 @@
+     PORTB = 0b1001; // reset PORTB
+     print("  {b:0>4} // (reset state)\n", .{PORTB});
+     print("| {b:0>4} // (bitmask)\n", .{0b0100});
+-    PORTB ??? (1 << 2); // What's missing here?
++    PORTB |= (1 << 2);
+     checkAnswer(0b1101, PORTB);
+ 
+     newline();
+@@ -269,7 +269,7 @@
+     PORTB = 0b1110; // reset PORTB
+     print("  {b:0>4} // (initial state of PORTB)\n", .{PORTB});
+     print("& {b:0>4} // (bitmask)\n", .{0b1011});
+-    PORTB = PORTB & ???@as(u4, 1 << 2); // What character is missing here?
++    PORTB = PORTB & ~@as(u4, 1 << 2);
+     checkAnswer(0b1010, PORTB);
+ 
+     newline();
+@@ -277,7 +277,7 @@
+     PORTB = 0b0111; // reset PORTB
+     print("  {b:0>4} // (reset state)\n", .{PORTB});
+     print("& {b:0>4} // (bitmask)\n", .{0b1110});
+-    PORTB &= ~(1 << 0); // What's missing here?
++    PORTB &= ~@as(u4, 1 << 0);
+     checkAnswer(0b0110, PORTB);
+ 
+     newline();