June 2018 Update

Task/Old-lady-swallowed-a-fly/Modula-2/old-lady-swallowed-a-fly.mod2

@@ -0,0 +1,52 @@
+MODULE OldLady;
+FROM FormatString IMPORT FormatString;
+FROM Terminal IMPORT WriteString,WriteLn,ReadChar;
+
+TYPE
+    AA = ARRAY[0..7] OF ARRAY[0..7] OF CHAR;
+    VA = ARRAY[0..7] OF ARRAY[0..63] OF CHAR;
+VAR
+    buf : ARRAY[0..127] OF CHAR;
+    animals : AA;
+    verses : VA;
+    i,j : INTEGER;
+BEGIN
+    FormatString("I don't know why she swallowed that fly.\nPerhaps she'll die\n", buf);
+
+    animals := AA{"fly", "spider", "bird", "cat", "dog", "goat", "cow", "horse"};
+    verses := VA{
+        "I don't know why she swallowed that fly.",
+        "That wiggled and jiggled and tickled inside her",
+        "How absurd, to swallow a bird",
+        "Imagine that. She swallowed a cat",
+        "What a hog to swallow a dog",
+        "She just opened her throat and swallowed that goat",
+        "I don't know how she swallowed that cow",
+        "She's dead of course"
+    };
+
+    FOR i:=0 TO 7 DO
+        FormatString("There was an old lady who swallowed a %s\n%s\n", buf, animals[i], verses[i]);
+        WriteString(buf);
+        IF i=0 THEN
+            WriteString("Perhaps she'll die");
+            WriteLn;
+            WriteLn;
+        END;
+        j := i;
+        WHILE (j>0) AND (i<7) DO
+            FormatString("She swallowed the %s to catch the %s\n", buf, animals[j], animals[j-1]);
+            WriteString(buf);
+            IF j=1 THEN
+                WriteString(verses[0]);
+                WriteLn;
+                WriteString("Perhaps she'll die");
+                WriteLn;
+                WriteLn
+            END;
+            DEC(j)
+        END;
+    END;
+
+    ReadChar
+END OldLady.