How can I read and manipulate CSV data in C ?

Understanding CSV Data Manipulation in C

In C , there is a straightforward method to read and process data from CSV files. A CSV (Comma-Separated Values) file is a common data format that stores information in a tabular structure, with values separated by commas.

Reading CSV Data

To read a CSV file in C , you can use the std::ifstream class. Here's a basic example:

#include <iostream>
#include <ifstream>
#include <string>

int main() {
    std::ifstream data("plop.csv");
    
    if (data.is_open()) {
        std::string line;

        while (std::getline(data, line)) {
            // Process each line of the CSV file here
        }
        
        data.close();
    }
    
    return 0;
}

Manipulating Data

Once you have read the CSV file, you can manipulate the data within each line. You can split a line into individual cells using a delimiter, typically a comma, as in this example:

std::stringstream lineStream(line);
std::string cell;
while (std::getline(lineStream, cell, ',')) {
    // Do something with the cell
}

This code iterates over each cell in the line, allowing you to access and modify the data as needed.

Additional Notes

It's important to ensure that the CSV file you are reading is well-formatted and has consistent data types. If your file contains special characters or null values, you may need to consider appropriate handling techniques.

Also, refer to the "CSV parser in C " question (link provided in the answer) for additional insights and potential alternatives.

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