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data_reader.cpp
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data_reader.cpp
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#include <iostream>
#include <fstream>
#include <vector>
#include <sstream>
#include <string>
double calculateAverage(const std::vector<double>& values) {
double sum = 0.0;
for (size_t i = 0; i < values.size(); i++) {
sum += values[i];
}
return sum / values.size();
}
int main() {
std::ifstream file("data.csv"); // Replace "data.csv" with the path to your CSV file
if (!file) {
std::cerr << "Failed to open the file." << std::endl;
return 1;
}
std::vector<double> columnData;
std::string line;
while (std::getline(file, line)) {
std::istringstream ss(line);
std::string cell;
// Split the line into cells using comma as the delimiter
std::getline(ss, cell, ','); // Skip the first column
std::getline(ss, cell, ','); // Read the second column
// Convert the cell value to double and store it in the vector
double value;
std::istringstream(cell) >> value;
columnData.push_back(value);
}
file.close();
if (columnData.empty()) {
std::cerr << "No data found in the second column." << std::endl;
return 1;
}
double average = calculateAverage(columnData);
std::cout << "Average value of the second column: " << average << std::endl;
return 0;
}