monorepo

P2/P2.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35303.130
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "smt4497-P2", "smt4497-P2\smt4497-P2.vcxproj", "{F2876C30-95C1-42D2-B434-6CE7CA561024}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Debug|x64.ActiveCfg = Debug|x64
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Debug|x64.Build.0 = Debug|x64
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Debug|x86.ActiveCfg = Debug|Win32
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Debug|x86.Build.0 = Debug|Win32
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Release|x64.ActiveCfg = Release|x64
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Release|x64.Build.0 = Release|x64
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Release|x86.ActiveCfg = Release|Win32
+		{F2876C30-95C1-42D2-B434-6CE7CA561024}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {46966ECB-4E2E-4549-94F4-D4DA31B33174}
+	EndGlobalSection
+EndGlobal

P2/smt4497-P2/Crono.cpp

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+#include "Crono.h"
+
+// agrupación de clases, funciones y variables globales
+namespace ss {  
+
+	Crono::Crono() // constructor
+	{
+		// Paso 1: Obtiene la frecuencia del timer del PC en tics/segundo usando QueryPerformanceFrequency
+		if (_ticsPorSegundoDelTimerDelPC < 0) {
+			// No se ha calculado la frecuencia aún. Se calcula ahora
+			LARGE_INTEGER frecuencia;
+			char _cadDbg[TAM_CADENA_DEBUG]; // snprintf almacena en una matriz intermedia y al pasar 
+			// _cadDbg es un puntero a _cadDbg[0]
+
+			if (QueryPerformanceFrequency(&frecuencia)) {
+				_ticsPorSegundoDelTimerDelPC = frecuencia.QuadPart;
+
+				snprintf(_cadDbg, sizeof(_cadDbg), "La frecuencia del contador del PC es %d Hz\n",
+					_ticsPorSegundoDelTimerDelPC);
+				OutputDebugStringA(_cadDbg);
+			}
+			else {
+				OutputDebugStringA("Error al ejecutar QueryPerformanceFrequency en " __FUNCTION__);
+			}
+		}
+	}
+	
+	Crono::~Crono() // destructor
+	{
+	}
+
+	bool Crono::Inicio()
+	{
+		bool res = false;
+
+		if (_ticsPorSegundoDelTimerDelPC > 0) {
+			// Paso 2: guarda el valor actual del timer del PC en tics usando QueryPerformanceCounter 
+			LARGE_INTEGER ticks;
+			if (QueryPerformanceCounter(&ticks)) {
+				_ticsAntes = ticks.QuadPart;
+				res = true;
+			}
+			else {
+				OutputDebugStringA("Error al ejecutar QueryPerformanceCounter en " __FUNCTION__);
+			}
+		}
+		return res;
+	}
+
+	double Crono::Lee()
+	{
+		double segundos = -1.0;
+
+		// Paso 3: Obtiene el valor actual del timer del PC en tics usando QueryPerformanceCounter
+		LARGE_INTEGER ticks;
+		if (QueryPerformanceCounter(&ticks)) {
+			int64_t ahora = ticks.QuadPart;
+			segundos = (double)(ahora - _ticsAntes) / _ticsPorSegundoDelTimerDelPC;
+		}
+		else {
+			printf("Error al ejecutar QueryPerformanceCounter en " __FUNCTION__);
+		}
+		return segundos;
+	}
+
+}

P2/smt4497-P2/Crono.h

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+#pragma once
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <Windows.h>
+
+namespace ss {
+	class Crono {
+
+	private: // por defecto todo es private
+		int64_t _ticsAntes = 0;
+		int64_t _ticsPorSegundoDelTimerDelPC = -1;
+		static const int TAM_CADENA_DEBUG = 64;
+	public:
+		Crono();
+		~Crono();
+		bool Inicio();
+		double Lee();
+	};
+}

P2/smt4497-P2/smt4497-P2-classes.cpp

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+#include "smt4497-P2.h"
+
+int p2_classes()
+{	
+	ss::Crono crono;
+	crono.Inicio();
+	Sleep(10000);
+	double segs = crono.Lee();
+	printf("Segundos: %f\n", segs);
+	return 0;
+}

P2/smt4497-P2/smt4497-P2-struct-union.cpp

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+#include "smt4497-P2.h"
+
+int p2_struct_union()
+{
+	setlocale(LC_ALL, "spanish");
+
+	printf("\nEstructuras | PR<50>CTICA 2 | SS\n");
+	printf("---------------------------------\n");
+
+	struct {
+		int entero;
+		char car;
+	} vEstructura = { 256, 1 }; // Define + inicializa la estructura
+
+	union {
+		int entero;
+		unsigned char car[4];
+	}  vUnion = { 256 }; // Define + inicializa la uni<6E>n
+
+	vUnion.entero = 0x89abcdef; // byte 0: 0xef, byte 1: 0xcd, byte 2: 0xab, byte 3: 0x89
+
+	printf("vUnion.entero vale 0x%x\n", vUnion.entero);
+	printf("El valor del byte 2 de vUnion.entero es: 0x%x\n",
+		// (vUnion.entero & 0x00ff0000) >> 16); tambi<62>n es v<>lido hacer primero la m<>scara y luego shift
+		(vUnion.entero >> (8 * 2) & 0xff));
+
+	printf("El valor del byte 2 de vUnion.entero es: 0x%x\n",
+		vUnion.car[2]);
+
+	// printf("Estructura: %d Tam: %d\n", vEstructura.entero, sizeof(vEstructura));
+	// printf("Union: %d Tam: %d\n", vUnion.entero, sizeof(vUnion));
+
+	return 0;
+}

P2/smt4497-P2/smt4497-P2-typedef.cpp

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+#include "smt4497-P2.h"
+
+typedef struct {
+	int entero;
+	char car;
+} tEstructura_t;
+
+tEstructura_t var1 = { 100, 1 };
+tEstructura_t var2 = { 100, 1 };
+
+int p2_typedef()
+{
+	printf("\nEstructuras Personalizadas | PR<50>CTICA 2 | SS\n");
+	printf("------------------------------------------------\n");
+
+	tEstructura_t var3 = { 100, 1 };
+
+	int comparacion = memcmp(&var1, &var2, sizeof(tEstructura_t));
+	printf("resultado de comparar var1 y var2: %d\n", comparacion);
+
+	comparacion = memcmp(&var1, &var3, sizeof(tEstructura_t));
+	printf("resultado de comparar var1 y var3: %d\n", comparacion);
+
+	return 0;
+}

P2/smt4497-P2/smt4497-P2.cpp

@@ -0,0 +1,12 @@
+#include "smt4497-P2.h"
+
+int main(int argc, char* argv[], char* envp[])
+{
+	setlocale(LC_ALL, "Spanish");
+
+	// p2_struct_union();
+	// p2_typedef();
+	p2_classes();
+
+	return 0;
+}

P2/smt4497-P2/smt4497-P2.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdio.h>
+#include <locale.h>
+#include <Windows.h>
+#include "Crono.h"
+
+int p2_struct_union();
+int p2_typedef();
+int p2_crono();
+int p2_classes();

P2/smt4497-P2/smt4497-P2.vcxproj

@@ -0,0 +1,143 @@
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P2/smt4497-P2/smt4497-P2.vcxproj.filters

@@ -0,0 +1,42 @@
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P2/smt4497-P2/smt4497-P2.vcxproj.user

@@ -0,0 +1,4 @@
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