#ifndef HOURS_H #define HOURS_H typedef struct hoursStruct hours; hours* hours_new(char *input); hours* hours_right_now(); hours* hours_sub(hours* self, hours* other); hours* hours_add(hours* self, hours* other); char* hours_display(hours* self); void hours_free(hours* self); int hours_preceed(hours* self, hours* other); #endif