cppType errorEasy

Uncaught std::invalid_argument exception in std::stoi

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What it should do

Parse string to integer, or return -1 on invalid input. Example: safeParseInteger("abc") -> -1

What happens instead

terminate called after throwing an instance of 'std::invalid_argument'

#include <iostream>
#include <string>

int safeParseInteger(std::string s) {
    // Unchecked std::stoi throws std::invalid_argument if non-numeric
    return std::stoi(s);
}

int main() {
    std::cout << safeParseInteger("abc") << std::endl;
    return 0;
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

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This bug belongs to the type errors pattern

Totals that concatenate, sorts that put 10 before 9, comparisons that refuse to run.

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#include <iostream> #include <string> int safeParseInteger(std::string s) { // Unchecked std::stoi throws std::invalid_argument if non-numeric return std::stoi(s); } int main() { std::cout << safeParseInteger("abc") << std::endl; return 0; }

Uncaught std::invalid_argument exception in std::stoi

What it should do

What happens instead

More type errors to practise

Uncaught std::invalid_argument exception in std::stoi

What it should do

What happens instead

More type errors to practise