2 files changed, 93 insertions, 8 deletions
diff --git a/initrd/graph b/initrd/graph
index 8f9916a..949fd52 100644
--- a/initrd/graph
+++ b/initrd/graph
@@ -41,24 +41,24 @@ func(makegrid) {
 #
 
 makegrid()
-clearcmd = "clear"
+clearcmd = ""
 while (1) {
 	rect(0, 0, 480, 40, 0)
 	print("f(x) = ")
-	Fx = gets()
+	fx = gets()
 
-	if (Fx == clearcmd) {
+	if (fx == clearcmd) {
 		makegrid()
 	} else {
 		# do function
-		x = xmin
-		while (x < xmax) {
-			y = solve(Fx)
+		X = xmin
+		while (X < xmax) {
+			y = solve(fx)
 			y = 0 - y
 			if ((y >= ymin) & (y <= ymax)) {
-				pixel(cx + x * xinc, cy + y * yinc, 511)
+				pixel(cx + X * xinc, cy + y * yinc, 511)
 			}
-			x = x + 1 / xinc
+			X = X + 1 / xinc
 		}
 	}
 
diff --git a/initrd/table b/initrd/table
new file mode 100644
index 0000000..62961e3
--- /dev/null
+++ b/initrd/table
@@ -0,0 +1,85 @@
+ppos(0, 0)
+array(table, 1)
+
+index = 0
+while (1) {
+	c = getkey()
+	# down
+	if (c == 25) {
+		rpos(0, 1)
+		index = index + 1
+	}
+	# up
+	if (c == 24) {
+		rpos(0, -1)
+		if (index > 0) {
+			index = index - 1
+		}
+	}
+	# right - insert
+	if (c == 26) {
+		print("          ")
+		rpos(-10, 0)
+		print("> ")
+		table.index = getf()
+		ppos(0, index)
+		print(index)
+		print(": ")
+		print(table.index)
+		print("         ")
+		index = index + 1
+		ppos(0, index)
+	}
+	# plus - sum
+	if (c == 43) {
+		s = size(table)
+		j = 0
+		sum = 0
+		while (j < s) {
+			sum = sum + table.j
+			j = j + 1
+		}
+		ppos(0, 17)
+		print("                    ")
+		ppos(0, 17)
+		print("sum: ")
+		print(sum)
+		ppos(0, 0)
+		index = 0
+	}
+	# * - product
+	if (c == 42) {
+		s = size(table)
+		j = 0
+		product = 1
+		while (j < s) {
+			product = product * table.j
+			j = j + 1
+		}
+		ppos(0, 17)
+		print("                    ")
+		ppos(0, 17)
+		print("product: ")
+		print(product)
+		ppos(0, 0)
+		index = 0
+	}
+	# / - average
+	if (c == 47) {
+		s = size(table)
+		j = 0
+		sum = 0
+		while (j < s) {
+			sum = sum + table.j
+			j = j + 1
+		}
+		average = sum / size(table)
+		ppos(0, 17)
+		print("                    ")
+		ppos(0, 17)
+		print("average: ")
+		print(average)
+		ppos(0, 0)
+		index = 0
+	}
+}