It is a standard exception class. All objects thrown by components of the standard library are derived from this class. Therefore, all standard exceptions can be caught by catching this type by reference.
DeclarationFollowing is the declaration for std::exception.
class exception;Example
In below example for std::exception.
#include <thread>
#include <vector>
#include <iostream>
#include <atomic>
std::atomic_flag lock = ATOMIC_FLAG_INIT;
void f(int n) {
for (int cnt = 0; cnt < 100; ++cnt) {
while (lock.test_and_set(std::memory_order_acquire))
;
std::cout << "Output from thread " << n << '\n';
lock.clear(std::memory_order_release);
}
}
int main() {
std::vector<std::thread> v;
for (int n = 0; n < 10; ++n) {
v.emplace_back(f, n);
}
for (auto& t : v) {
t.join();
}
}
Derived types Derived types(through logic_error) Derived types(through runtime_error) Derived types(through bad_alloc) Derived types(through system_error, since C++11) Sr.No. Derived types Definition 1 ios_base::failure It is a base class for stream exceptions Member functions Sr.No. Derived types Definition 1 (constructor) It is constructor exception 2 operator= It is a copy exception 3 what It is used to get string identifying exception 4 (destructor) It is a destroy exception
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