Can't understand where this error is coming from. Trying to follow an example tutorial and my version isn't working. What's the deal?
libc++abi: terminating with uncaught exception of type std::invalid_argument: stoi: no conversion
https://www.geeksforgeeks.org/csv-file-management-using-c/
// C++ function
void read_record()
{
// File pointer
std::fstream fin;
// Open an existing file
fin.open("reportcard.csv", std::ios::in);
// Get the roll number
// of which the data is required
int rollnum, roll2, count = 0;
std::cout << "Enter the roll number "
<< "of the student to display details: ";
std::cin >> rollnum;
// Read the Data from the file
// as String Vector
std::vector<std::string> row;
std::string line, word, temp;
while (fin >> temp) {
row.clear();
// read an entire row and
// store it in a string variable 'line'
getline(fin, line);
// used for breaking words
std::stringstream s(line);
// read every column data of a row and
// store it in a string variable, 'word'
while (std::getline(s, word, ',')) {
// add all the column data
// of a row to a vector
row.push_back(word);
}
// convert string to integer for comparision
roll2 = stoi(row[0]);
// Compare the roll number
if (roll2 == rollnum) {
// Print the found data
count = 1;
std::cout << "Details of Roll " << row[0] << " : \n";
std::cout << "Name: " << row[1] << "\n";
std::cout << "Maths: " << row[2] << "\n";
std::cout << "Physics: " << row[3] << "\n";
std::cout << "Chemistry: " << row[4] << "\n";
std::cout << "Biology: " << row[5] << "\n";
break;
}
}
if (count == 0)
std::cout << "Record not found\n";
}
// terminal
max@Maxs-MacBook-Air csv % g++ -std=c++11 csv_practice.cpp -o csv_practice
max@Maxs-MacBook-Air csv % ./csv_practice
Enter the roll number of the student to display details: 1
libc++abi: terminating with uncaught exception of type std::invalid_argument: stoi: no conversion
// csv file
1,rahul,100,90,75,100
2,kaushik,90,80,50,90
3,nayonika,90,70,95,86
4,simran,55,85,70,70
5,sumana,65,90,95,100
max@Maxs-MacBook-Air csv % g++ -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 12.0.5 (clang-1205.0.22.11)
Target: arm64-apple-darwin20.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
