调用bios喇叭发声

来源：互联网发布：hifiman supermini知乎编辑：程序博客网时间：2024/05/17 08:40
话不多说，上代码：
#include <windows.h>#include <iostream>#include <map>using namespace std;const int DO = 261;const int RE = 293;const int MI = 329;const int FA = 349;const int SO = 392;const int LA = 440;const int TI = 493;const int DO_ = 130;const int RE_ = 147;const int MI_ = 165;const int FA_ = 174;const int SO_ = 186;const int LA_ = 220;const int TI_ = 247;int frequency(char note){    static map<const char,int> table;        if(table.size() == 0){        table['1'] = DO;            table['2'] = RE;                    table['3'] = MI;            table['4'] = FA;            table['5'] = SO;            table['6'] = LA;            table['7'] = TI;                    table['c'] = DO_;            table['d'] = RE_;                    table['e'] = MI_;            table['f'] = FA_;            table['g'] = SO_;            table['a'] = LA_;            table['b'] = TI_;        }            return table.find(note) -> second;}class music{    private:        string notes;        int tenuto;    public:        music(string &song , int tenuto_) { notes = song; tenuto = tenuto_; play(notes.end(),tenuto);}        void play(string::iterator it,int duration );};void music::play(string::iterator it, int duration){    char note = *it;        if( it == notes.begin() )        return;        if( note == '-')         play( it - 1, duration + tenuto);    else {        if( isalnum(note) ) {            play( it - 1, 0);                        Beep(frequency(note), tenuto + duration);        } else            play( it - 1, duration);    }    } string bee = "\ 5 3 3 - | 4 2 2 - | 1 2 3 4 | 5 5 5 - | \ 5 3 3 - | 4 2 2 - | 1 3 5 5 | 3 3 3 - | \ 2 2 2 2 | 2 3 4 - | 3 3 3 3 | 3 4 5 - | \ 5 3 3 - | 4 2 2 - | 1 3 5 5 | 1 3 1 - |  \ ";  string happynewyear = "\  1 1 1 - g - | 3 3 3 - 1 - | 1 3 5 - 5 - | \  4 3 2 - - - | 2 3 4 - 4 - | 3 2 3 - 1 - | \  1 3 2 - g - | b 2 1 - - - | \  ";  int main() {     music m(bee, 300);  music m2(happynewyear, 200);  return 0; }
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