langs a-z

Task/Identity-matrix/XPL0/identity-matrix.xpl0

@@ -0,0 +1,17 @@
+include c:\cxpl\codes;
+def IntSize = 4;                        \number of bytes in an integer
+int Matrix, Size, I, J;
+
+[Text(0, "Size: ");  Size:= IntIn(0);
+Matrix:= Reserve(Size*IntSize);         \reserve memory for 2D integer array
+for I:= 0 to Size-1 do
+        Matrix(I):= Reserve(Size*IntSize);
+for J:= 0 to Size-1 do                  \make array an identity matrix
+    for I:= 0 to Size-1 do
+        Matrix(I,J):= if I=J then 1 else 0;
+for J:= 0 to Size-1 do                  \display the result
+    [for I:= 0 to Size-1 do
+        [IntOut(0, Matrix(I,J));  ChOut(0, ^ )];
+    CrLf(0);
+    ];
+]