practicas delphi chicos.pdf

COMPUTACION PARA INGENIERIA

PROGRAMA 1 CARACTERISTICAS PERSONALES

program caracteristicas_personales; uses forms, dialogs,sysutils; begin showmessage('hola mi nombre es juan'+#13+'me gusta jugar futbol'); showmessage('vivo en cercado'+#13+'estoy en ing civil'); showmessage('soy signo piscis'+#13+'peso 78 kg'); end.


PROGRAMA 2 DISTANCIA ENTRE 2 PUNTOS EN COORDENADAS

CILINDRICAS Program Distancia_en_coordenadas_Cilindricas; Uses Forms,Dialogs,Sysutils; var r1,a1,h1,r2,a2,h2,x1,y1,z1,x2,y2,z2,distancia:double; begin r1:=strtofloat(inputbox('punto1','ingrese radial 1','')); a1:=strtofloat(inputbox('punto1','ingrese azimutal 1','')); h1:=strtofloat(inputbox('punto1','ingrese horitzontal 1','')); r2:=strtofloat(inputbox('punto2','ingrese radial 2','')); a2:=strtofloat(inputbox('punto2','ingrese azimutal 2','')); h2:=strtofloat(inputbox('punto2','ingrese horitzontal 2','')); x1:=r1*cos(a1/180); y1:=r1*sin(a1/180); z1:=h1; x2:=r2*cos(a2/180); y2:=r2*sin(a2/180); z2:=h2; distancia:=sqrt(sqr(x2-x1)+sqr(y2-y1)+sqr(z2-z1)); showmessage('la distancia entre 2 puntos en coordenadas cilindricas es: ' +floattostr(distancia)); end.


PROGRAMA 3 PROMEDIO DE 8 ESTUDIANTES CON 10 NOTAS

program Promedio_de_notas; uses forms, dialogs, sysutils; var n:string; n1,n2,n3,n4,n5,n6,n7,n8,n9,n10:integer; type testudiante=class procedure iniciar(n:string;n1,n2,n3,n4,n5,n6,n7,n8,n9,n10:integer); function media:real; procedure mostrar; private nombre:string; nota1,nota2,nota3,nota4,nota5,nota6,nota7,nota8,nota9,nota10:REAL; end; procedure testudiante.iniciar; begin nombre:=n;nota1:=n1;nota2:=n2;nota3:=n3;nota4:=n4;nota5:=n5;nota6:=n6;nota7:=n7;nota8:=n8;nota9:=n9;nota10:=n10; end; function testudiante.media; begin media:=(nota1+nota2+nota3+nota4+nota5+nota6+nota7+nota8+nota9+nota10)/10; end; procedure testudiante.mostrar; begin showmessage(nombre+#13+#13+#13'Ha Obtenido de PROMEDIO'+#13'='+floattostr(media)); end; var e1,e2,e3,e4,e5,e6,e7,e8:testudiante; begin e1:=testudiante.Create; e2:=testudiante.Create; e3:=testudiante.Create; e4:=testudiante.Create; e5:=testudiante.Create; e6:=testudiante.Create; e7:=testudiante.Create; e8:=testudiante.Create; e1.iniciar('Gilmar Alvis',100,100,100,100,100,100,100,100,100,100);e1.mostrar; e2.iniciar('Edson Zabala',40,80,77,54,80,50,80,50,50,70);e2.mostrar; e3.iniciar('Omar Dominguez',70,60,50,60,80,65,100,80,80,75);e3.mostrar; e4.iniciar('Cristian Martinez',58,50,90,60,40,20,46,50,60,80);e4.mostrar;


e5.iniciar('Isaac Garcia',70,70,80,70,70,90,80,60,87,100);e5.mostrar; e6.iniciar('Guido Cruz',100,90,10,100,80,80,50,85,40,60);e6.mostrar; e7.iniciar('Marlene Estrada',80,100,40,80,87,80,90,100,50,60);e7.mostrar; e8.iniciar('Carlos Tamez',100,70,60,65,80,50,80,68,70,80);e8.mostrar; end.


PROGRAMA 4 MAYOR DE 8 NUMEROS

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) GroupBox1: TGroupBox; Edit1: TEdit; Edit2: TEdit; Edit3: TEdit; Edit4: TEdit; Edit5: TEdit; Edit6: TEdit; Edit7: TEdit; Edit8: TEdit; Button1: TButton; Label1: TLabel; Label2: TLabel; Label3: TLabel; Label4: TLabel; Label5: TLabel; Label6: TLabel; Label7: TLabel; Label8: TLabel; Label9: TLabel; Button2: TButton; Edit9: TEdit; Label10: TLabel; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation


{$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); var a,b,c,d,e,f,g,h,mayor:double; begin try a:=strtofloat(edit1.text); b:=strtofloat(edit2.text); c:=strtofloat(edit3.text); d:=strtofloat(edit4.text); e:=strtofloat(edit5.text); f:=strtofloat(edit6.text); g:=strtofloat(edit7.text); h:=strtofloat(edit8.text); mayor:=a; if(b>mayor)then mayor:=b; if(c>mayor)then mayor:=c; if(d>mayor)then mayor:=d; if(e>mayor)then mayor:=e; if(f>mayor)then mayor:=f; if(g>mayor)then mayor:=g; if(h>mayor)then mayor:=h; edit9.Text:=floattostr(mayor); button1.Enabled:=false; except on econverterror do begin showmessage('Existe Algun Error'); end; end; end; procedure TForm1.Button2Click(Sender: TObject); begin close end; end.


PROGRAMA 5 3 USUARIOS Y 4 CONTRASEAS CON 60 SEGUNDOS Y 3

INTENTOS unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls, Buttons; type TForm1 = class(TForm) Label1: TLabel; Label2: TLabel; Label3: TLabel; Label4: TLabel; Edit1: TEdit; Edit2: TEdit; Edit3: TEdit; BitBtn1: TBitBtn; BitBtn2: TBitBtn; Label12: TLabel; Timer1: TTimer; Label5: TLabel; Label6: TLabel; Label7: TLabel; Label8: TLabel; Edit4: TEdit; Edit5: TEdit; Edit6: TEdit; Edit7: TEdit; procedure BitBtn1Click(Sender: TObject); procedure Timer1Timer(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1;


implementation {$R *.dfm} procedure TForm1.BitBtn1Click(Sender: TObject); begin if((LowerCase(Edit1.Text)='pedro')and(LowerCase(Edit4.Text)='1'))then begin if((LowerCase(Edit2.Text)='juan')and(LowerCase(Edit5.Text)='2'))then begin if((LowerCase(Edit3.Text)='lucas')and(LowerCase(Edit6.Text)='3'))then begin if(LowerCase(Edit7.Text)='4')then begin Timer1.Enabled:=false; MessageDlg('BIENVENIDO LOGRO ENTRAR AL SISTEMA',mtinformation,[mbOK],1); close end end end end else if Form1.Tag=3 then begin Timer1.Enabled:=false; Label12.Caption:=''; MessageDlg('SE LE TERMINO LAS OPORTUNIDADES', mtwarning,[MbOK],1); close end else Form1.Tag:=Form1.Tag+1; edit1.SelStart:=0; edit1.SelLength:=length(edit1.text); edit1.SetFocus; end; procedure TForm1.Timer1Timer(Sender: TObject); begin Label12.Caption:='LE RESTAN: '+IntToStr (Timer1.Tag)+' SEGUNDOS'; Timer1.Tag:=Timer1.Tag-1; if Timer1.Tag=0 then


begin Timer1.Enabled:=false; Label12.Caption:=''; ShowMessage('SU TIEMPO ACABO INTENTE DESPUES'); close end; end; end.


PROGRAMA 6 CONVERSION DE UNIDADES

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Edit1: TEdit; Edit2: TEdit; Edit3: TEdit; Edit4: TEdit; Label1: TLabel; Label2: TLabel; Label3: TLabel; Label4: TLabel; Label5: TLabel; Button1: TButton; procedure Edit1KeyPress(Sender: TObject; var Key: Char); procedure Edit2KeyPress(Sender: TObject; var Key: Char); procedure Edit3KeyPress(Sender: TObject; var Key: Char); procedure Edit4KeyPress(Sender: TObject; var Key: Char); procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char); var kgcm2,libpul2,kippie2,tonm2:double; begin case ord(key) of 13:begin


if(sender=edit1)then kgcm2:=strtofloat(edit1.text); libpul2:=kgcm2*(22050/1550); kippie2:=kgcm2*2.0286; tonm2:=kgcm2*10; edit2.Text:=floattostr(libpul2); edit3.text:=floattostr(kippie2); edit4.text:=floattostr(tonm2); end; end; end; procedure TForm1.Edit2KeyPress(Sender: TObject; var Key: Char); var kgcm2,libpul2,kippie2,tonm2:double; begin case ord(key) of 13:begin if(sender=edit2)then libpul2:=strtofloat(edit2.text); kgcm2:=libpul2*(31/441); kippie2:=libpul2*0.1426; tonm2:=libpul2*(310/441); edit1.Text:=floattostr(kgcm2); edit3.text:=floattostr(kippie2); edit4.text:=floattostr(tonm2); end; end; end; procedure TForm1.Edit3KeyPress(Sender: TObject; var Key: Char); var kgcm2,libpul2,kippie2,tonm2:double; begin case ord(key) of 13:begin if(sender=edit3)then kippie2:=strtofloat(edit3.text); kgcm2:=kippie2*(5000/10143); libpul2:=kippie2*(1000/142.6); tonm2:=kippie2*(1/0.20286); edit1.Text:=floattostr(kgcm2); edit2.text:=floattostr(libpul2); edit4.text:=floattostr(tonm2); end; end; end; procedure TForm1.Edit4KeyPress(Sender: TObject; var Key: Char); var


kgcm2,libpul2,kippie2,tonm2:double; begin case ord(key) of 13:begin if(sender=edit4)then tonm2:=strtofloat(edit4.text); kgcm2:=tonm2*(1/10); libpul2:=tonm2*(2205/1550); kippie2:=tonm2*0.20286; edit1.Text:=floattostr(kgcm2); edit2.text:=floattostr(libpul2); edit3.text:=floattostr(kippie2); end; end; end; procedure TForm1.Button1Click(Sender: TObject); begin close end; end.


PROGRAMA 7

TANGENTE APROXIMADA

unit unit1; interface uses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; type tform1 = class(tform) button1: tbutton; edit1: tedit; edit2: tedit; edit3: tedit; label1: tlabel; label2: tlabel; label3: tlabel; label4: tlabel; button2: tbutton; procedure button1click(sender: tobject); procedure button2click(sender: tobject); private { private declarations } public { public declarations } end; var form1: tform1; implementation {$r *.dfm} function coseno(ang:double):real; var t,x,s,i:double; begin x:=(ang*3.141592654)/180; t:=-(x*x)/2;


s:=1+t; i:=1; while(abs(t/s)>= 1e-500)do begin i:=i+1; t:=((-t)*(x*x))/(2*i*(2*i-1)); s:=s+t; end; coseno:=s; end; function seno(ang:double):real; var s,x,xrad,term:double; k:integer; begin xrad:=(ang*3.141592654)/180; s:=0; term:=xrad; k:=1; repeat s:=s+term; term:=(-1)*term*(xrad*xrad)/((k+2)*(k+1)); k:=k+1; until (abs(term)


PROGRAMA 8 RAIZ APROXIMADA DE 11

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Label1: TLabel; Edit1: TEdit; GroupBox1: TGroupBox; Label2: TLabel; Button1: TButton; procedure Button1Click(Sender: TObject); procedure Edit1KeyPress(Sender: TObject; var Key: Char); private { Private declarations } public { Public declarations } end; const cota=1E-6; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin CLOSE end; procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char); var ant,dif,x,r:real; begin if(key=#13)then


begin x:=strtofloat(edit1.text); r:=x/11; repeat ant:=r; r:=(10*ant+x/(ant*ant*ant*ant*ant*ant*ant*ant*ant*ant))/11; dif:=abs(x-(r*r*r*r*r*r*r*r*r*r*r)); until (dif


PROGRAMA 9 GRAFICAR NOMBRE Y APELLIDO

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs; type TForm1 = class(TForm) procedure FormPaint(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.FormPaint(Sender: TObject); begin with canvas do begin pen.color:=clblue; pen.Width:=3; polyline([point(40,40),point(80,40),point(60,40),point(60,80),point(40,80),point(40,60)]); //dibuja la letra J polyline([point(100,40),point(100,80),point(120,80),point(120,40)]); //dibuja la letra U polyline([point(140,80),point(140,40),point(160,40),point(160,60),point(140,60),point(160,60),point(160,80)]); //dibuja la letra A polyline([point(180,80),point(180,40),point(200,80),point(200,40)]);//dibuja la letra N polyline([point(280,40),point(260,40),point(260,80),point(280,80)]);//dibuja la letra C polyline([point(300,80),point(300,40),point(320,40),point(320,60),point(300,60),point(320,80)]);//dibuja la letra R end;


end; end.

PROGRAMA 10 GRAFICAR CUADRADOS Y RECTANGULOS DINAMICOS

unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls; type TForm1 = class(TForm) Timer1: TTimer; procedure Timer1Timer(Sender: TObject); procedure FormActivate(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; x,y,dx,dy:integer; implementation {$R *.dfm} procedure TForm1.Timer1Timer(Sender: TObject);


begin x:=random(screen.Width-10); y:=random(screen.Height-10); canvas.pen.color:=random(65535); canvas.Pen.width:=random(7); dx:=random(400); dy:=random(400); canvas.rectangle(x,y,x+dx,y+dx ); //grafica cuadrados canvas.rectangle(y,x,y+dy,x+dx); //grafica rectangulos end; procedure TForm1.FormActivate(Sender: TObject); begin windowstate:=wsmaximized; timer1.interval:=50; randomize; end; end.

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