我的名字是Faith，我是C ++的初学程序员。我正在开发一个项目，我必须在两个文件中读取，并能够将每个文件中的项目分隔为自己的变量。第一个文件有两条信息用“，”分隔，第二个文件有三条信息。到目前为止，我认为我已经完成了阅读文件并获取文件中的每一行。此外，我已经用“，”分隔每个项目，现在我正在尝试将这些项目存储在其变量中。请帮忙！我尝试过多次启动这个项目，这是我知道如何实现这一目标的唯一方法。
#include <stdio.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <stdlib.h>
using namespace std;
class Manufactuer{
string upcode;
string company_name;
public:
void setupcode(string value){
upcode= value; }
void setcompany_name(string value){
company_name= value; }
string getupcode(){ return upcode;}
string getcompany_name(){return company_name;}
};
class Products{
string product_num;
string quantity;
string product_name;
public:
void setproduct_num(string value){
product_num= value; }
void setproduct_name(string value){
product_name= value; }
void setquantity(string value){
quantity = value;}
string getproduct_num(){ return product_num;}
string getquantity(){return quantity;}
string getproduct_name(){return product_name;}
};
int main(int argc, const char * argv[]) {
//opens the csv file
std::ifstream mccodesfile;
std::ifstream salesfile;
mccodesfile.open("mccodes.csv");
if(!mccodesfile){// file couldn't be opened
cout<<"Failed: file could not be opened"<<endl<<"Press Enter to Close:";
cin.get();
return 0;
}else
cout<<"Successfully opened file!"<<endl;
salesfile.open("sales.csv");
if(!salesfile){// file couldn't be opened
cout<<"Failed: file could not be opened"<<endl<<"Press Enter to Close:";
cin.get();
return 0;
}else
cout<<"Successfully opened file!"<<endl;
Manufactuer* upccodes;
int count; //how many elements in the array
int size; //how large the array
count = 0;
size = 2;
upccodes= (Manufactuer*)malloc(size*sizeof(Manufactuer)); //Malloc dynamatically reserve memory for variable pointer
string line;
while (getline(mccodesfile,line)) {// Taking every line from the file and putting in the variable line
Manufactuer newcode = Manufactuer(); //creating a upcode object
istringstream ss(line);
string token; //setting up split values
bool haveReadUPCode = false;
while (getline(ss,token,',')){// Separated values by comma
if(!haveReadUPCode){
newcode.setupcode(token);
haveReadUPCode = true;
}else{
newcode.setcompany_name(token);
}
}
if (count == size){
size = size * 2;
upccodes= (Manufactuer*)realloc(upccodes,size*sizeof(Manufactuer)); //Double the size while keeping the same elements
}
upccodes[count++]= newcode;
// cout<<line<<endl;
}
for (int i = 0; i<count; i++){
// cout<<upccodes[i].getcompany_name()<<endl; //Prints Manufactuers name--Works!
}
for (int i=0; i<count; i++) {
// cout<<upccodes[i].getupcode()<<endl; //Prints UPCcodes--Works
}
Products* product;
product= (Products*)malloc(size*sizeof(Products)); //Malloc dynamatically reserve memory for variable pointer
while(getline(salesfile, line)){{// Taking every line from the file and putting in the variable line
Products newProduct = Products(); //creating a product object
istringstream ss(line);
string token; //setting up split values
bool haveReadProduct = false;
while (getline(ss,token,',')){// Separated values by comma
if(!haveReadProduct){
newProduct.setproduct_num(token);
haveReadProduct = true;
} else{
newProduct.setproduct_name(token);
newProduct.setquantity(token);
}
}
if (count == size){
size = size * 2;
product= (Products*)realloc(product,size*sizeof(Products)); //Double the size while keeping the same elements
}
product[count++]= newProduct;
//cout<<line<<endl; //LINES ARE Printing!
}
}
for (int i = 0; i<count; i++){
// cout<<product[i].getproduct_name()<<endl; //Prints Product name--Works
}
for (int i = 0; i<count; i++){
//cout<<product[i].getproduct_num()<<endl; //Prints Product number--Works
}
}