From fba9c34c547c99d56b4bf2d83caf5c68a638107f Mon Sep 17 00:00:00 2001
From: Mitsuo Tokumori <rtokumori@pucp.edu.pe>
Date: Fri, 20 Oct 2023 07:20:44 -0500
Subject: Add p1 and p2 solution for 2023-2 E1

---
 2023-2/E1/mitsuo/p2/fun.cpp | 126 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 2023-2/E1/mitsuo/p2/fun.cpp

(limited to '2023-2/E1/mitsuo/p2/fun.cpp')

diff --git a/2023-2/E1/mitsuo/p2/fun.cpp b/2023-2/E1/mitsuo/p2/fun.cpp
new file mode 100644
index 0000000..9e61144
--- /dev/null
+++ b/2023-2/E1/mitsuo/p2/fun.cpp
@@ -0,0 +1,126 @@
+#include <iostream>
+#include <fstream>
+#include <iomanip>
+
+#include <cstdlib>
+#include <cstring>
+#include "fun.hpp"
+
+using namespace std;
+
+enum Reg {COD, NOM, PRECIO, STOCK};
+
+void cargarProductos(void *&prod, const char *nombArch){
+    ifstream in(nombArch);
+    if(!in) {
+        cerr << "Error: no se pudo abrir archivo\n";
+        exit(1);
+    }
+    void **productos=nullptr;    
+    char *cod;
+    int nd=0, cap=0;
+    while(1){
+        cod = leeCad(in,',');
+        if(in.eof()) break;
+        if(nd==cap) aumentaEspacios(productos,nd,cap);
+        guardaProd(in, productos[nd-1], cod);
+        nd++;
+    }
+    prod = productos;
+    qsort(prod, nd-1, sizeof(void *), cmpProducto);
+}
+
+void aumentaEspacios(void**&productos, int &nd, int &cap){
+    void **aux;
+    cap += INCREMENTO;
+    if(productos==nullptr){
+        productos = new void * [cap]{};
+        nd=1;
+    }
+    else{
+        aux = new void * [cap]{};
+        for(int i=0;i<nd;i++){
+            aux[i] = productos[i];
+        }
+        delete productos;
+        productos = aux;
+    }
+}
+
+char *leeCad(istream &arch, char delim){
+    char *cad, buff[80];
+    arch.getline(buff,80,delim);
+    if(arch.eof()) return nullptr;
+    cad = new char [strlen(buff)+1];
+    strcpy(cad,buff);
+    return cad;
+}
+
+void guardaProd(istream &arch, void *&prod, char *cod){
+    void **producto = new void *[2]{};
+    producto[0] = creaRegProd(arch, cod);
+    producto[1] = nullptr;
+    prod = producto;
+}
+
+void *creaRegProd(istream &arch, char *cod){
+    char *nomb;
+    double precio;
+    int stock;
+    void **reg;
+    nomb = leeCad(arch,',');
+    arch>>precio;
+    arch.get();
+    arch>>stock;
+    arch>>ws;
+    reg = new void * [4] {};
+    reg[COD] = cod;
+    reg[NOM] = nomb;
+    reg[PRECIO] = new double (precio);
+    reg[STOCK] = new int (stock);
+    return reg;
+}
+
+int cmpProducto(const void *a, const void *b){
+    void **ai = (void**)a, **bi = (void**)b;
+    void **duplaA = (void**)(*ai), **duplaB = (void**)(*bi);
+    void **regA = (void**)(duplaA[0]), **regB = (void**)(duplaB[0]);
+    char *codA = (char *)(regA[0]), *codB = (char*)(regB[0]);
+    return strcmp(codA, codB);
+}
+
+void pruebaDeCargaDeProductos(void *prod){
+    void **productos = (void**)prod;
+    ofstream out("PruebaProductos.txt");
+    if(!out){
+        cout<<"error al abrir archivo PruebaProductos.txt"<<endl;
+        exit(1);
+    }
+    out.precision(2);
+    out<<fixed;
+    out<<setw(70)<<"REPORTE DE PRUEBA DE PRODUCTOS"<<endl;
+    imprimeLinea(out,'=');
+    out<<left<<setw(10)<<"CODIGO"<<setw(70)<<"NOMBRE"<<right<<setw(10)<<"PRECIO"
+            <<setw(10)<<"STOCK"<<endl;
+    for(int i=0;productos[i];i++){
+        imprimeProducto(out,productos[i]);
+    }
+}
+
+void imprimeLinea(ostream &arch,char c){
+    for(int i=0;i<110;i++) arch<<c;
+    arch<<endl;
+}
+
+void imprimeProducto(ostream &arch,void *prod){
+    void **producto = (void**)prod;
+    imprimeRegistroProducto(arch,producto[0]);
+}
+
+void imprimeRegistroProducto(ostream &arch,void *prod){
+    void **producto = (void**)prod;
+    char *cod = (char*)producto[COD],*nom = (char*)producto[NOM];
+    double *precio = (double*)producto[PRECIO];
+    int *stock = (int*)producto[STOCK];
+    arch<<left<<setw(10)<<cod<<setw(70)<<nom<<right<<setw(10)<<*precio<<setw(9)<<*stock<<endl;
+}
-- 
cgit v1.2.3