Why do I get this error "Do statement must have while"

[mR.faVOriTo]

`

#include<iostream.h>
#include<conio.h>
#include<string.h>

typedef char string50[51];
typedef char string08[9];

typedef struct
{ string50 strName;
  string08 strID;
  float fQuiz[3];
  float fMacProb[2];
  float fFinalExam;
  float fRawScore;
  float fFinalGrade;
  float fAveQ, fAveMP;

}STUDENT_RECORD;

typedef STUDENT_RECORD CLASS_RECORD[5];

#define Name    1
#define ID  2
#define QUIZ1   3
#define QUIZ2   4
#define QUIZ3   5
#define MP1 6
#define MP2 7
#define FE  8

//initializes the content of class record to null & 0
void initializes(CLASS_RECORD c)
{
  int i, j;
  for(i = 0; i < 5; i++)
  { strcpy(c[i].strName, "");
    strcpy(c[i].strID, "");

    for(j = 0; j < 3; j++)
    { c[i].fQuiz[j] = 0;
    }

    for (j = 0; j < 2; j++)
    { c[i].fMacProb[j] = 0;
    }

    c[i].fFinalExam = 0;
    c[i].fRawScore = 0;
    c[i].fFinalGrade = 0;
  }
}

//displays the main menu
void displayOption()
{ cout<<"\n *****************************";
  cout<<"\n     [1]     Add Record";
  cout<<"\n     [2]     View Student Record ";
  cout<<"\n     [3]     Modify Student Record";
  cout<<"\n     [4]     View Class Record";
  cout<<"\n     [5]     EXIT";
  cout<<"\n ******************************";
  }

  int searchRecord(CLASS_RECORD c, char str[], int nMode)
  { int nIndex = -1, i = 0;

    while(i < 5 && nIndex == -1)
    { if(nMode == Name && !strcmp(c[i].strName, str))
     nIndex = i;
      else if(nMode == ID && !strcmp(c[i].strID, str))
     nIndex = i;
      i++;
    }
    return nIndex;
 }

void viewStudentRecord (CLASS_RECORD c, int n)
{ int i;

  cout<<"\n *****STUDENT RECORD#"<<n+1<<"*****\n";
  cout<<c[n].strName;
  cout<<c[n].strID;

  for(i = 0; i < 3; i++)
  {cout<<"\n*****QUIZ#"<<i+1<<":"<<c[n].fQuiz[i];
  }

  for(i = 0; i < 3; i++)
  {cout<<"\n*****MACHINE PROBLEM#"<<i+1<<":"<<c[n].fMacProb[i];
  }

  cout<<"\n*****FINAL EXAM: "<<c[n].fFinalExam;
  cout<<"\n*****RAW SCORE: "<<c[n].fRawScore;
  cout<<"\n*****FINAL GRADE: "<<c[n].fFinalGrade<<"\n";

  }

  void addRecord(CLASS_RECORD c, int *n)
  { cout<<"*****ADD RECORD*****\n";
    cout<<"STUDENT NAME: ";
    cin>>c[*n].strName;
    cout<<"STUDENT ID: ";
    cin>>c[*n].strID;

    *n = *n+1;
    }

  //display the option for input of grades
  void displayOptionInput()
  { cout<<"\n****************************************\n";
    cout<<"\n [1] Enter New Student Name ";
    cout<<"\n [2] Enter New Student ID ";
    cout<<"\n [3] Enter Quiz#1 ";
    cout<<"\n [4] Enter Quiz#2 ";
    cout<<"\n [5] Enter Quiz#3 ";
    cout<<"\n [6] Enter Machine Problem#1 ";
    cout<<"\n [7] Enter Machine Problem#2 ";
    cout<<"\n [8] Enter Final Exam ";
    cout<<"\n [9] DISPLAY ";
    cout<<"\n [10] EXIT ";
    cout<<"\n****************************************\n";
    }

    //computations.....
    void computeAveQ(CLASS_RECORD c, int n)
    { int i;
      c[n].fAveQ = 0;
      for(i = 0; i < 3; i++)
      { c[n].fAveQ += c[n].fQuiz[i];
      }
      c[n].fAveQ /= 3;
      }

    void computeAveMP(CLASS_RECORD c, int n)
    { int i;

      c[n].fAveMP = 0;
      for(i = 0; i < 2; i++)
      { c[n].fAveMP += c[n].fQuiz[i];
      }

      c[n].fAveMP /= 2;
    }

    void computeRawScore(CLASS_RECORD c, int n)
    { c[n].fRawScore = (c[n].fAveQ + c[n].fAveMP + c[n].fFinalExam) / 3;
    }

    void computeFinalGrade(CLASS_RECORD c, int x)
    { if (c[x].fRawScore >= 94)
      c[x].fFinalGrade = 1.00;
    }

    void modifyRecord(CLASS_RECORD c, int n)
    { int mode, num;

      num = n + 1;

      cout<<"you are going to modify record #"<<num;
      viewStudentRecord (c,n);

      do
      { displayOptionInput();

    cout<<"******************\n";
    cout<<"ENTER YOUR OPTION: ";
    cin>>mode;
    cout<<"******************\n\n";

    switch(mode)
    { case Name:
      { cout<<"NEW NAME: ";
        cin>>c[n].strName;
        break;
      }

      case ID:
      { cout<<"NEW ID: ";
        cin>>c[n].strID;
        break;
      }

      case QUIZ1:
      { cout<<"NEW QUIZ#1: ";
        cin>>c[n].fQuiz[0];
        break;
      }

      case QUIZ2:
      { cout<<"NEW QUIZ#2: ";
        cin>>c[n].fQuiz[1];
        break;
      }

      case QUIZ3:
      { cout<<"NEW QUIZ#3: ";
        cin>>c[n].fQuiz[2];
        break;
      }

      case MP1:
      { cout<<"NEW MP1: ";
        cin>>c[n].fMacProb[0];
        break;
      }

      case MP2:
      { cout<<"NEW MP2: ";
        cin>>c[n].fMacProb[1];
        break;
      }

      case FE:
      { cout<<"NEW FE: ";
        cin>>c[n].fFinalExam;
        break;
      }

      case 9:
      { viewStudentRecord(c,n);
        break;
      }
    }

    computeAveQ(c, n);
    computeAveMP(c, n);
    computeRawScore(c, n);
    computeFinalGrade(c, n);
      }while (mode != 10);
    }

    void chooseNameOrID(string50 str, int nMode)
    { cout<<"[1] Student Name\n";
      cout<<"[2] Student ID\n";
      cout<<"Choose: ";
      cin>>nMode;

      if(nMode == Name)
     cout<<"STUDENT NAME: ";
      else if(nMode == ID)
     cout<<"STUDENT ID: ";
      cin>>str;
    }

    void viewClassRecord(CLASS_RECORD c)
    { int nInterval = 1, i, nStart = 0, bValid = 1, y;
      char ch = '\0';

      do
      { bValid = 1;
    cout<<"Enter [P]rev, [N]ext or [Q]uit: ";
    cin>>ch;

    if(ch == 'P' || ch == 'p')
    { for (i = 0; i < nInterval; i++)
      if(nStart == 0)
         nStart = 4;
      else
         nStart--;

    }

    if(ch == 'N' || ch == 'n')
    { nStart = (nStart + nInterval) % 5;
    }

    if(bValid)
    { for ( i = 0; i < nInterval; i++)
      { y = (nStart + 1) % 5;
        viewStudentRecord(c, y);
      }

    } while(ch != 'Q' || ch != 'q');
      }

    void main()
    { clrscr();

      CLASS_RECORD classRec;
      string50 string;
      int mode, numRec, choice, index;

      initialize(classRec);
      strcpy(string, "");
      numRec = 0;

      do
      { displayOption();
    cout<<"**************\n";
    cout<<"OPTION: ";
    cin>>choice;
    cout<<"**************\n\n";

    switch(choice)
    { case 1:
      { addRecord(classRec, &numRec);
        cout<<"NUM REC"<<numRec;
        break;
      }

      case 2:
      { chooseNameOrID(&string, &mode);
        index = searchRecord(classRec, string, mode);
        viewStudentRecord(classRec, index);
        break;
      }

      case 3:
      { chooseNameOrID(&string, &mode);
        index = searchRecord(classRec, string, mode);
        modifyRecord(classRec, index);
        break;
      }

      case 4:
      { viewClassRecord(classRec);
      break;
      }
    }
    }while(choice !=5);
  }

  getch();
  }

`

[ddanbe]

Could you specify the line wher the error occurs?
My first guess is that there's something wrong with your brackets.

[NathanOliver]

line 249-250: do {
lines 267-274:

if(bValid)
{ for ( i = 0; i < nInterval; i++)
  { y = (nStart + 1) % 5;
    viewStudentRecord(c, y);
  }

} while(ch != 'Q' || ch != 'q');
  }

The closing brace where while is at is actually the closing brace for the if statement. the closing brace beneath it is the one for the do statement. You are also missing a closing brace for the function. You really need to indent your code better. The two main ways I have seen are:

line of code;
more code;
if(something)
{
    more code;
    even more code;
    if(another condition)
    {
        even more code here;
    }
    some more code here;
}
last line of code;

// or 

line of code;
more code;
if(something){
    more code;
    even more code;
    if(another condition){
        even more code here;
    }
    some more code here;
}
last line of code;

I personally prefer the first method as you can easily see that the brackets line up.

[tinstaafl]

Another thing getch() is outside of main there's one too many closing braces.

Also, chooseNameOrID(&string, &mode); is passing addresses to a function that doesn't expect them.