introduÇÃo ao c# para iniciantes

8/7/2019 INTRODUO AO C# PARA INICIANTES

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//Tipo valorint x = 10;

//Tipo refernciaint y = new int(10);

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//Tipo valorSystem.Int32 x = 10;

//Tipo refernciaSystem.Int32 y = new System.Int32(10);

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//extraindo um valor int de longint x;long y = 10;x = y;

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//extraindo um valor int de longint x;long y = 10;x =(int)y;

//extraindo um valor System.Int32 de System.Int64


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System.Int32 x;System.Int64 y = 10;x = (System.Int32)y;

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long l = 1000;int i = 500;Console.WriteLine({0} {1} {2} {3} {4} {5},l,i,i,l,l,i);

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//Comando isoladoif(a==true) System.Console.Write("Verdadeiro");

//Bloco de comandos{

int x = 100;int y = 200;int z = x + y;

}

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//Vrios comandos em uma nica linhawhile(a


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using System;

class Declares{

private static int f = 1000, g; //Variveis de escopo de classeprivate const int m = 1000, n = 10000; //Constantes de escopo de classe

public static void Main(){

//Constantes de escopo localconst int x = 10;const long y = 100;

//Variveis de escopo localint a = 10;long b;

b = 100;g = 10000;

printf(x,y,a,b);

}

//Funoprivate static void printf(int ix, long ly, int ia, long lb){

Console.WriteLine("Locais\nconstantes: x={0} y={1} vriaveis: a={2}b={3}",ix,ly,ia,lb);

Console.WriteLine("Classe\nconstantes: m={0} n={1} vriaveis: f={2}g={3}",m,n,f,g);

}

}


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int x;int y;int z = 10;

! ) ) 7 1){

iSeq[1] = 1;


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for(int a=2; a < iVezes; ++a)iSeq[a] = iSeq[a-1] + iSeq[a-2];

}

//Exibe o vetorfor(int a=0; a < iVezes; ++a){

Console.Write(iSeq[a]);Console.Write(" ");

}

}

}

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= ( * ) " ) = B# 4 " 1){

iSeq[1] = 1;for(int a=2; a < iVezes; ++a)iSeq[a] = iSeq[a-1] + iSeq[a-2];

}

//Exibe o vetorforeach(int a in iSeq){

Console.Write(a);Console.Write(" ");

}

}

}

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= ( * " ) 7 : 4 < System.Collections.IEnumerator ienumSeq = iSeq.GetEnumerator();

while(ienumSeq.MoveNext()){

System.Console.WriteLine(ienumSeq.Current);

}

foreach(int a in iSeq){

System.Console.WriteLine(a);

}


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int a = 0;bool f = true;

while(f){

if(++a==100) f = true;System.Console.WriteLine(a);

}

int a = 0;bool f = true;

do{

if(++a==100) f = true;System.Console.WriteLine(a);

} while(f);

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Console.WriteLine("Bloco catch #2. Mensagem: {0}",e.Message);

}

catch(Exception e){

Console.WriteLine("Bloco catch #3. Mensagem: {0}",e.Message);

}

finally{

Console.WriteLine("Bloco finally");

}

}

}

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using System;

class Overflows{

public static void Main(){

try{

short a = 32767;

short b = (short)(a + 1);Console.Write("{1} + 1 = {0}",b,a);

}

catch(OverflowException e){

Console.WriteLine("Mensagem: {0}",e.Message);

}

}

}

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using System;

class Pointers{

unsafe public static void Process(int[] a){

fixed(int* pa = a){

for(int i=0;i


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) ) " ) # "1 1 1 1 R = # 6 C ) " " ) ) ). ( 634 R

> ) D C ) " " ) ) )> 7 D 34 R

=) ) 0 ) ( S ) " D ) ) " )" ) " "

x = +1000 // x = 1000x = -1000 // x = -1000

=) ) 0 ) ( - \ ' ] ) " D ) ) 4 ))C )0 ) " ) ) ) " " ) )

7 " D " )" ) ) " " $ ")" ) O ) 4 )) )" # 4" " " = 0 ] " "

E F =) 4 ) 4 )" )) )

string x = Hello + World // x = HelloWorld

string x = Valor = + 100 // x = Valor = 100

int x = 1000 % 11 // x = 10

int x = 1000 ( 1000 / 11 ) * 11 // x = 10

= B 4 " D ) ) " " ) $ " " D" ) " ) = " ,- " 1 "

)" ) W " = "* " O W " ) ))4 "0 " " W "


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