#include #include void main(void); void main() { int freq; printf("20 Hz tone...\n"); fg_sound(20,3); fg_waitfor(18); printf("100 Hz tone...\n"); fg_sound(100,3); fg_waitfor(18); printf("1000 Hz tone...\n"); fg_sound(1000,3); fg_waitfor(18); printf("warble...\n"); fg_sound(400,1); fg_sound(410,1); fg_sound(400,1); fg_sound(410,1); fg_waitfor(18); printf("sliding tone from 100 to 500 Hz...\n"); for (freq = 100; freq <= 500; freq+=10) fg_sound(freq,2); }