swaaz · swaaz · Oct 11, 2020 · Oct 11, 2020 · Oct 11, 2020 · Oct 11, 2020
diff --git a/C++/Program-16/README.md b/C++/Program-16/README.md
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+# Program for right angled patterns
diff --git a/C++/Program-16/rightangle.cpp b/C++/Program-16/rightangle.cpp
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+#include <iostream>
+using namespace std;
+
+int main()
+{
+
+	int i, space, rows, k=1;
+
+	cout<<"Enter the number of rows: ";
+	cin>>rows;
+
+	for(i=1; i<=rows; i++) {
+		for(space=i; space<rows; space++) {
+			cout<<"\t";
+		}
+		for(j=1; j<=i; j++) {
+			cout<<k<<"\t";
+			k++;
+		}
+		cout<<"\n";
+	}
+
+	return 0;
+}
diff --git a/C++/Program-17/README.md b/C++/Program-17/README.md
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+# This program is to print random texts with colour
diff --git a/C++/Program-17/randomcolorscreen.cpp b/C++/Program-17/randomcolorscreen.cpp
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+#include <stdio.h>
+#include <conio.h>
+#include <dos.h>
+#include <stdlib.h>
+
+int main()
+{
+
+	int color;
+	int bcolor;
+	int x,y;
+	int d;
+
+	//init random to return random value each time
+	randomize();
+	//clears the screen
+	clrscr();
+
+	//infinite loop until key is not pressed 
+	while(!kbhit())
+	{
+		//gerenate randon text and background color
+		color =rand()%16;
+		bcolor=rand()%16;
+
+		//define text color 
+		textcolor(color);
+		//define background color
+		textbackground(bcolor);
+		//check if both colors are same, continue the loop
+		if(color==bcolor)
+			continue;
+
+		//generate random X and Y Co-ordinates
+		x = rand()%75;
+		y = rand()%20;
+		//define position to print the text 
+		gotoxy(x,y);
+		//print the text 
+		cprintf("IncludeHelp");
+		//delay 
+		delay(100);
+	}
+
+	return 0;
+}
diff --git a/C++/Program-18/README.md b/C++/Program-18/README.md
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+# Program to get weekday with given day.
diff --git a/C++/Program-18/getWeekday.cpp b/C++/Program-18/getWeekday.cpp
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+#include<iostream>
+using namespace std;
+
+//function to get date and return weekday number [0-6]
+int getWeekDay(int yy, int mm, int dd) 
+{
+	//formula to get weekday number
+	int rst =                                                     
+		dd                                                      
+		+ ((153 * (mm + 12 * ((14 - mm) / 12) - 3) + 2) / 5) 
+		+ (365 * (yy + 4800 - ((14 - mm) / 12)))
+		+ ((yy + 4800 - ((14 - mm) / 12)) / 4)
+		- ((yy + 4800 - ((14 - mm) / 12)) / 100)
+		+ ((yy + 4800 - ((14 - mm) / 12)) / 400)
+		- 32045;
+
+	return (rst+1)%7 ;
+}
+
+//main program/code
+int main()
+{
+	//declaring array of weekdays`
+	const char *Names[] = {"Sunday","Monday", "Tuesday","Wednesday", "Thursday", "Friday", "Saturday"};
+	int day = 0;
+    int y,m,d;
+    cin>>y;
+    cin>>m;
+    cin>>d;
+	//calling function, storing weekday number in day
+	day= getWeekDay(y,m,d);
+	//printing the weekday from given array
+	cout<<"Day : "<<Names[day]<<endl;
+
+	return 0;    
+}
diff --git a/Python/Program-22/Plot_function b/Python/Program-22/Plot_function
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+import turtle # import the turtle module to draw the graph with
+
+# set up the screen
+wn = turtle.Screen()
+
+# set up the turtle
+graph = turtle.Turtle()
+graph.hideturtle() # hide the turtle so the graph looks nice
+graph.speed(0) # speed up the turtle
+
+# draw the axes
+# x axis
+graph.forward(250)
+graph.penup()
+graph.goto(250,5)
+graph.write('x',font=('Cambria',12,'italic'))
+graph.goto(0,0)
+graph.pendown()
+graph.backward(250)
+graph.forward(250)
+
+# y axis
+graph.left(90)
+graph.forward(250)
+graph.penup()
+graph.goto(5,250)
+graph.write('y',font=('Cambria',12,'italic'))
+graph.goto(0,0)
+graph.pendown()
+graph.backward(250)
+graph.forward(250)
+
+def f(x):
+    '''f(x) -> float
+    generic function to be graphed'''
+    return x**2
+
+def decrease_to_fit(zoom):
+    '''decrease_to_fit(zoom) -> tup
+    decreases x to fit the graph'''
+    minX = -250/zoom
+    maxX = 250/zoom
+    # fit for negative x
+    while abs(f(minX)) > 250/zoom:
+        minX += 0.5/zoom
+    # fit for positive x
+    while f(maxX) > 250/zoom:
+        maxX -= 0.5/zoom
+    # return tuple of min and max
+    return (minX,maxX)
+
+def graph_function(t,zoom=10):
+    '''graph_function(t,zoom) -> none
+    draws the graph of a function using turtle t
+    and is zoomed in to zoom'''
+    t.pensize(2)
+    # go to the start without drawing a ling
+    x,maxX = decrease_to_fit(zoom)
+    t.penup()
+    t.goto(x*zoom,f(x)*zoom)
+    t.pendown()
+    # draw the graph
+    while x <= maxX:
+        x += 0.01
+        t.goto(x*zoom,f(x)*zoom)
+
+graph_function(graph,100)
+
+wn.mainloop()
diff --git a/Python/Program-22/README.md b/Python/Program-22/README.md
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+# This program Plots graph for any function.
Original file line number	Diff line number	Diff line change
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		# This program is to print random texts with colour