materiales

ejecutable

#include<iostream>
using namespace std;
int main()
{
    int a=0,b=0,c=0;
    cout<<"ingrese un numero: ";cin>>a;
    cout<<"ingrese otro numero: ";cin>>b;
    while(a<=b)
    {
        if(a%2!=0)
        c=c+1; a=a+1;    
    }
    cout<<c<<endl;
    cin.ignore(); return 0;
}

ejecutable


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication11
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text=textBox1.Text+'1';
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '2';
        }

        private void button3_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '3';
        }

        private void button4_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '4';
        }

        private void button5_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '5';
        }

        private void button6_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '6';
        }

        private void button7_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '7';
        }

        private void button8_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '8';
        }

        private void button9_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '9';
        }

        private void button10_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + '0';
        }

        private void button11_Click(object sender, EventArgs e)
        {
            textBox1.Text =  " ";          
            label4.Visible = false;
            label5.Visible = false;
            label6.Visible = false;
            label7.Visible = false;
            label8.Visible = false;
            label9.Visible = false;
            label10.Visible = false;
            textBox2.Visible = false;
            textBox3.Visible = false;
            textBox4.Visible = false;
            textBox5.Visible = false;
            textBox6.Visible = false;
            textBox7.Visible = false;
            textBox8.Visible = false;
            button12.Visible = true;  
        }

        private void button13_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void button12_Click(object sender, EventArgs e)
        {
            label4.Visible = true;
            label5.Visible = true;
            label6.Visible = true;
            label7.Visible = true;
            label8.Visible = true;
            label9.Visible = true;
            label10.Visible = true;
            textBox2.Visible=true;
            textBox3.Visible = true;
            textBox4.Visible = true;
            textBox5.Visible = true;
            textBox6.Visible = true;
            textBox7.Visible = true;
            textBox8.Visible = true;
            int i, j, dividendo;
            int[,] billetes = new int[2, 7] {{1000,500,200,100,50,20,1},{0,0,0,0,0,0,0} }; ;
            j = 0;         
            dividendo = Convert.ToInt16(textBox1.Text);
            for (i = 0; i <= 6; i++) {
                billetes[1, i] = dividendo / billetes[0, j];
               
                dividendo = dividendo % billetes[0, j];
                j++;
                button12.Visible = false;
                // MessageBox.Show(j.ToString());
            }
            textBox2.Text = Convert.ToString(billetes[1, 0]);
            textBox3.Text = Convert.ToString(billetes[1, 1]);
            textBox4.Text = Convert.ToString(billetes[1, 2]);
            textBox5.Text = Convert.ToString(billetes[1, 3]);
            textBox6.Text = Convert.ToString(billetes[1, 4]);
            textBox7.Text = Convert.ToString(billetes[1, 5]);
            textBox8.Text = Convert.ToString(billetes[1, 6]);
        }
    }
}





Clases
                                            mapas mentales

programa cuadro mágico         librería math

videos

El siguiente video está en inglés, pero se entiende

una tabla de multiplicar






formato moneda

 private void pictureBox1_Click(object sender, EventArgs e)
        {
            for (int i = 28; i < 500;i++ )
            {
                pictureBox1.Location= new Point(i,34);
            }
            for (int i = 34; i < 200; i++)
            {
                pictureBox1.Location = new Point(500, i);
            }
            for (int i = 500; i > 28; i--)
            {
                pictureBox1.Location = new Point(i, 200);
            }
            for (int i = 200; i > 34; i--)
            {
                pictureBox1.Location = new Point(28, i);
            }
        }



dibuja línea

            System.Drawing.Pen myPen;
            myPen = new System.Drawing.Pen(System.Drawing.Color.Red);
            System.Drawing.Graphics formGraphics = this.CreateGraphics();
            formGraphics.DrawLine(myPen, 0, 0, 200, 200);
            myPen.Dispose();
            formGraphics.Dispose();

varias formas

        {
            System.Drawing.Pen myPen;
            myPen = new System.Drawing.Pen(System.Drawing.Color.Red);
            System.Drawing.Graphics formGraphics = this.CreateGraphics();
            formGraphics.DrawLine(myPen, 0, 0, 200, 200);
            formGraphics.DrawLine(myPen, 1, 1, 45, 65);
            formGraphics.DrawBezier(myPen, 15, 15, 30, 30, 45, 30, 87, 20);
            formGraphics.DrawEllipse(myPen, new Rectangle(33, 45, 40, 50));
            formGraphics.DrawPolygon(myPen, new PointF[] {new PointF(1, 1),
         new PointF (20, 10), new PointF(5, 4), new PointF(100, 2),
        new PointF(200, 50), new PointF(39, 45)});
            myPen.Dispose();
            formGraphics.Dispose();
        }


dibuja rectángulo con distinto grosor

            System.Drawing.Pen myPen;
            myPen = new System.Drawing.Pen(System.Drawing.Color.Green,3);
            System.Drawing.Graphics formGraphics = this.CreateGraphics();
            formGraphics.DrawLine(myPen, 10, 10, 100, 10);
            formGraphics.DrawLine(myPen, 10, 200, 100, 200);  //  (columna, renglón)
            formGraphics.DrawLine(myPen, 10, 10, 10, 200);
            formGraphics.DrawLine(myPen, 100, 10, 100, 200);
            myPen.Dispose();
            formGraphics.Dispose();


polígono construido con líneas

        {
            System.Drawing.Pen myPen;
            myPen = new System.Drawing.Pen(System.Drawing.Color.Blue,2);
            System.Drawing.Graphics formGraphics = this.CreateGraphics();
            formGraphics.DrawPolygon(myPen, new PointF[] {new PointF(10, 10),
         new PointF (100, 10), new PointF(10,10), new PointF(10, 200),
        new PointF(10, 200), new PointF(100, 200), new PointF(100, 10), new PointF(100, 200)});
            myPen.Dispose();
            formGraphics.Dispose();
        }