向用戶輸出MIDI編號

Question

我正處於長項目的最後一個障礙。最後一步是將一串noteNames轉換爲MIDI編號，並將這些編號輸出回用戶。我寫了一個合適的代碼將字符（C-B）轉換爲MIDI編號，但是現在我需要將這些編號輸出回給用戶。我不確定在哪裏存儲它們以便能夠回想起它們......任何指針都會很棒！我是一個絕對的編碼愛好者，所以請原諒任何無知。此外，由於某些原因，當我從應用程序複製並粘貼代碼時，它會破壞佈局，因此請提前致歉。

‪#‎include‬ <iostream> 
#include <string> 
#include <vector> 

using namespace std; 
int notenumber; 
struct noteStorage { 
    string noteName; 
    string bassnoteName; 
    int midiNumber; 
    int noteLength; 
    int bassnoteLength; 
} 
; 
/////////////////////////////////////////////////////////////////////////////////////////////// 
//VALIDATION FOR NOTE NAME 
bool ValidateNote(string note) { 
    // Step 1: If note name length is less than 2 OR more than 3, return false 
    if (note.length() <2 || note.length() >3) { 
    cout<<"Note length must be 2 or 3 characters\n"; 
return false; 
    } 
    //Step 2: If true, the note must be/(or be) between A and G 
    else if(tolower(note[0])<'a' || tolower(note[0]) >'g') { 
    cout<<"Note must be A-G\n"; 
return false; 
    } 
    //Step 3: If true, the last character must be a digit 
    else if(isdigit(note[note.length()-1])==false) { 
    cout<<"Last character must be a digit\n"; 
return false; 
    } 
    //Step 4: If note length is 3 note[1] (character 2) must be '#'. 
    else if(note.length()==3 && note[1] !='#') { 
    "Invalid sharp note\n"; 
return false; 
    } 
    return true; 
} 
///////////////////////////////////////////////////////////////////////////////////////// 
//VALIDATION FOR NOTE LENGTH 
bool ValidateNoteLength (int length)//Step 1 - If notelength is not a digit, return FALSE 
{ 
    if (length==false) { 
    cout<<"Note length must be a digit/number, please re-enter"; 
    return false; 
    } 
    //Step 2 - If notelength is less than or equal to 0 or more than 16, return FALSE 
    if (length <=0 || length > 16) { 
    cout<<"Note length value cannot be less than 1 or more than 16, please re-enter"; 
    return false; 
    } 
    return true; 
} 
//////////////////////////////////////////////////////////////////////////////////////////////////////// 
int CalculateNoteNumber(string tempName) { 
    int Octave; 
    int notenumber; 
    tempName[0]=toupper(tempName[0]); 
    Octave=((tempName[tempName.length()-1]) -48) * 12; 
    if (tempName.length()==2) { 
    if(tempName[0]=='C') { 
     return notenumber=0; 
    } 
    else if(tempName[0]=='D') { 
     return notenumber=2; 
    } 
    else if(tempName[0]=='E') { 
     return notenumber=4; 
    } 
    else if(tempName[0]=='F') { 
     return notenumber=5; 
    } 
    else if(tempName[0]=='G') { 
     return notenumber=7; 
    } 
    else if(tempName[0]=='A') { 
     return notenumber=9; 
    } 
    else { 
     return notenumber=11; 
    } 
    } 
    else if (tempName.length()==3) { 
    if(tempName[0]=='C') { 
     return notenumber=1; 
    } 
    else if(tempName[0]=='D') { 
     return notenumber=3; 
    } 
    else if(tempName[0]=='F') { 
     return notenumber=6; 
    } 
    else if(tempName[0]=='G') { 
     return notenumber=8; 
    } 
    else { 
     return notenumber=10; 
    } 
    } 
} 
int main() { 
    noteStorage noteData[8]; 
    //string note; 
    for (int i=0; 
    i < 8; 
    i++) { 
    cout<<"Please enter melody note: " << i <<": "; 
    while (1) { 
     string tempName; 
     cin>>tempName; 
     int noteNumber=CalculateNoteNumber(tempName); 
     if (ValidateNote(tempName)==true) { 
     noteData[i].noteName=tempName; 
     break; 
     } 
     else { 
     cout <<"Please enter correctly: "; 
     } 
    } 
    //end first while 
    cout<<"Please enter note length: "; 
    while (1) { 
     int tempLength; 
     cin>>tempLength; 
     if (ValidateNoteLength(tempLength)==true) { 
     noteData[i].noteLength=tempLength; 
     break; 
     } 
     else { 
     cout <<"Please enter correctly: "; 
     } 
    } 
    //end while 2 
    cout<<"Thank you\n"; 
//////////////////////////////////////////////////////////////////////// 

    } 
    // Bass Melody Input 
    { 
    noteStorage noteData[8]; 
    //string note; 
    for (int i=0; 
    i < 8; 
    i++) { 
     cout<<"Please enter bass melody note: " << i <<": "; 
     while (1) { 
     string basstempName; 
     cin>>basstempName; 
     int noteNumber=CalculateNoteNumber(basstempName); 
     if (ValidateNote(basstempName)==true) { 
      noteData[i].bassnoteName=basstempName; 
      break; 
     } 
     else { 
      cout <<"Please enter correctly: "; 
     } 
     } 
     //end first while 
     cout<<"Please enter note length: "; 
     while (1) { 
     int basstempLength; 
     cin>>basstempLength; 
     if (ValidateNoteLength(basstempLength)==true) { 
      noteData[i].bassnoteLength=basstempLength; 
      break; 
     } 
     else { 
      cout <<"Please enter correctly: "; 
     } 
     } 
     //end while 2 
     cout<<"Thank you\n"; 

    } 
    //////////////////////////////////////////////////////////////////////// 

    } 
    //end for 
    cout<<"Your melody notes and note lengths are: "<<endl; 
    for (int i=0; 
    i < 8; 
    i++) { 
    cout<<noteData[i].noteName<<"Length: "; 
    cout<<noteData[i].noteLength<<endl; 
    } 
    cout<<"Your bass notes and note lengths are: "<<endl; 
    for (int i=0; 
    i < 8; 
    i++) { 
    cout<<noteData[i].bassnoteName<<"Length: "; 
    cout<<noteData[i].bassnoteLength<<endl; 
    } 
    /*system("pause"); 
return 0; 
*/ 
} 

Answer 1

你就在那裏！ int noteNumber=CalculateNoteNumber(tempName);已儲存您在noteNumber所需的信息。 cout支持不同的類型，包括int，所以你可以這樣做，例如：cout << endl << "Current note MIDI number: " << noteNumber用標註號碼寫出一條新的標準輸出到標準輸出。

這是否解決了您要查找的內容？