Add C examples

Signed-off-by: Junjie Mao <junjie.mao@enight.me>

.gitignore

@@ -5,7 +5,7 @@ ASMSimulator.iml
 *~
 *.new
 *.old
-*.txt
+after.txt
 cucu-cc
 
 *.o

examples/63-c-1.txt

@@ -0,0 +1,8 @@
+; 6.3 C example (1)
+
+int main()
+{
+	int i = 3;
+	int j = 5;
+	i = i + j;
+}

examples/64-c-2.txt

@@ -0,0 +1,10 @@
+; 6.4 C example (2)
+
+int main()
+{
+	int i = 5;
+	while(i != 10)
+	{
+		i = i + 1;
+	}
+}

examples/65-c-3.txt

@@ -0,0 +1,11 @@
+; 6.5 C Example (3)
+
+int main()
+{
+	int i = 3;
+	int j = 5;
+	if(i != 5)
+	{
+		j = 6;
+	}
+}