#include "./lib/SSVLSystemAlertVolume.h" int main() { OSStatus result; Float32 volume; result = SSVLGetSystemVolume(&volume); if (result != noErr) { printf("Error getting system volume: %d\n", result); return 1; } printf("System volume: %f\n", volume); Float32 new_volume = 0.5; result = SSVLSetSystemVolume(new_volume); if (result != noErr) { printf("Error setting system volume: %d\n", result); return 1; } printf("Set volume to: %f\n", new_volume); }