EXIT_SUCCESS, EXIT_FAILURE - cppreference.com (original) (raw)
| Defined in header | | | | ----------------------------------------------------------------------------- | | | | #define EXIT_SUCCESS /*implementation defined*/ | | | | #define EXIT_FAILURE /*implementation defined*/ | | |
The EXIT_SUCCESS and EXIT_FAILURE macros expand into integral constant expressions that can be used as arguments to the std::exit function (and, therefore, as the values to return from the main function), and indicate program execution status.
| A freestanding implementation is required to provide EXIT_SUCCESS and EXIT_FAILURE. | (since C++23) |
|---|
| Constant | Description |
|---|---|
| EXIT_SUCCESS | successful execution of a program |
| EXIT_FAILURE | unsuccessful execution of a program |
[edit] Notes
Both EXIT_SUCCESS and the value zero indicate successful program execution status (see std::exit), although it is not required that EXIT_SUCCESS equals zero.
Although EXIT_SUCCESS and EXIT_FAILURE are required to be freestanding since C++23, they are not required to be available in a freestanding C implementation.
[edit] Example
#include #include int main(int argc, char* argv[]) { if (argc <= 1) { std::cout << "At least one command-line argument required\n"; return EXIT_FAILURE; } std::cout << argv[1] << '\n'; return EXIT_SUCCESS; }
Possible output:
The quick brown fox jumps over the lazy cat