strsignal—convert signal number to string #include <string.h>
char *strsignal(int signal);
Description
strsignal converts the signal number signal into a
string. If signal is not a known signal number, the result
will be of the form "Unknown signal NN" where NN is the signal
is a decimal number.
Returns
This function returns a pointer to a string. Your application must
not modify that string.
Portability
POSIX.1-2008 C requires strsignal, but does not specify the strings used
for each signal number.
strsignal requires no supporting OS subroutines.