Return string describing error condition
#include <upsclient.h>
char *upscli_strerror(UPSCONN_t *ups);
The upscli_strerror() function takes the pointer ups to a UPSCONN_t state structure and returns a string describing the last error which occurred on this connection. The string is valid until the next call to upscli_strerror().
The upscli_strerror() function returns a description of the error, or an unknown error message if the error code is not recognized.