When I was trying to run the program Visual Studio threw the error like this: " Error: Unable to open file C:\Users...\test1\Debug\investment.obj. Error code = 0x80070002.
I have tried many ways mentioned online but still not working. So, I was thinking if there was any problem in the code.
What's going on? Please help.
#include <vector>
#include <string>
#include <iostream>
#include <fstream>
#include <sstream>
#include <cmath>
#include <numeric>
using namespace std;
struct Investment
{
string Name;
string BankAccount;
string SortCode;
float Investment;
float Contribution;
};
string Trim(string str)
{
str.erase(0, str.find_first_not_of(" \t\r\n"));
str.erase(str.find_last_not_of(" \t\r\n") + 1);
return str;
}
void Get_Data(const string& filename, vector<Investment>& data)
{
ifstream fin(filename);
if (!fin.is_open())
return;
string line;
if (!getline(fin, line))
return;
while (getline(fin, line))
{
istringstream sin(line);
vector<string> fields;
string field;
while (getline(sin, field, ','))
{
fields.push_back(field);
}
Investment inv;
inv.Name = Trim(fields[0]);
inv.BankAccount = Trim(fields[1]);
inv.SortCode = Trim(fields[2]);
inv.Investment = atof(Trim(fields[3]).c_str());
inv.Contribution = 0.0f;
data.push_back(inv);
}
}
void Save_Data(const string& filename, const vector<Investment>& data)
{
ofstream fout(filename);
if (!fout.is_open())
return;
fout << "NAME, BANK ACCOUNT, SORT CODE, INVESTMENT, Contribution\n";
for (auto& inv : data)
{
fout << inv.Name << " "
<< inv.BankAccount << " "
<< inv.SortCode << " "
<< inv.Investment << " "
<< inv.Contribution << "\n";
}
}
int main()
{
vector<Investment> Data_investment;
Get_Data("aaa.csv", Data_investment);
float total = accumulate(Data_investment.begin(), Data_investment.end(), 0.0f,[](float sum, const Investment& inv) { return sum + inv.Investment; }
);
for (auto& inv : Data_investment)
{
float percentage = (inv.Investment * 100.0f) / total;
inv.Contribution = percentage;
}
Save_Data("aaa_new.csv", Data_investment);
return 0;
}
I have successfully compiled your source code into Visual Studio 2017 with very slight modification. Please have a look.
#include <vector>
#include <string>
#include <iostream>
#include <fstream>
#include <sstream>
#include <cmath>
#include <numeric>
using namespace std;
struct Investment
{
std::string Name;
std::string BankAccount;
std::string SortCode;
float Invest; // Changed due the variable name goes same as struct name if use Investment
float Contribution;
};
string Trim(string &str)
{
str.erase(0, str.find_first_not_of(" \t\r\n"));
str.erase(str.find_last_not_of(" \t\r\n") + 1);
return str;
}
void Get_Data(const string& filename, vector<Investment>& data)
{
ifstream fin(filename);
if (!fin.is_open())
return;
string line;
if (!getline(fin, line))
return;
while (getline(fin, line))
{
istringstream sin(line);
vector<string> fields;
string field;
while (getline(sin, field, ','))
{
fields.push_back(field);
}
Investment inv;
inv.Name = Trim(fields[0]);
inv.BankAccount = Trim(fields[1]);
inv.SortCode = Trim(fields[2]);
inv.Invest = atof(Trim(fields[3]).c_str());
inv.Contribution = 0.0f;
data.push_back(inv);
}
}
void Save_Data(const string& filename, const vector<Investment>& data)
{
ofstream fout(filename);
if (!fout.is_open())
return;
fout << "NAME, BANK ACCOUNT, SORT CODE, INVESTMENT, Contribution\n";
for (auto& inv : data)
{
fout << inv.Name << " "
<< inv.BankAccount << " "
<< inv.SortCode << " "
<< inv.Invest << " "
<< inv.Contribution << "\n";
}
}
int main()
{
vector<Investment> Data_investment;
Get_Data("aaa.csv", Data_investment);
float total = accumulate(Data_investment.begin(), Data_investment.end(), 0.0f, [](float sum, const Investment& inv) { return sum + inv.Invest; }
);
for (auto& inv : Data_investment)
{
float percentage = (inv.Invest * 100.0f) / total;
inv.Contribution = percentage;
}
Save_Data("aaa_new.csv", Data_investment);
return 0;
}
Below is the modified part
std::string Name;
std::string BankAccount;
std::string SortCode;
float Invest; // Changed due the variable name goes same as struct name if use Investment
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