<分区>
当我编译时它说“警告 C4700:使用了未初始化的局部变量‘count’”。 我不确定为什么要这样说，我没有来这里，所以有人可以做我的作业。 只是寻求有关此错误的帮助，我知道它与函数定义 ReadStudentData 或 Main 中有关。
谢谢
#include<iostream>
#include<fstream>
#include<string>
using namespace std;
struct StudentType
{string studentName;
int testScore;//Between 0 and 100
char grade;
}student[20];
void PrintNameHeader(ostream& out);
bool OpenInputFile(ifstream& inFile, string& infilename ); //OPEN input file
void Pause();// Pause
void ReadStudentData(ifstream& infile, StudentType student[], int& );// Read student infp including first and last name and test score
void AssignGrades(StudentType student[], int);//assign grades to each student
int HighestScore(const StudentType student[], int );//Get the highest scores
void PrintNamesWithHighestScore(const StudentType student[], int);//Print name with highest Scores
void DisplayAllStudents(const StudentType student[], int);//Display all students
void GetLowHighRangeValues(int& , int&);//for example a student types 50 100 , it will get all students within that range
void DisplayStudentsInRange(const StudentType student[], int, int, int);// display students in that range
void SortStudentsByName(StudentType student[], int);// sort students by name
void SortStudentsByScore(StudentType student[], int);// sort students by test score highest to lowest
const int NUM_STUDENTS = 20;
int main()
{
ifstream infile;
string inFilename;
int count = 0;
StudentType student[NUM_STUDENTS];
int numStudents;
PrintNameHeader(cout);
OpenInputFile(infile,inFilename);
ReadStudentData(infile, student, numStudents);
AssignGrades(student, numStudents);
return 0;
}
//Function definitions
void PrintNameHeader(ostream& out)
{
//Display name header on screen
cout << "name" << endl;
}
bool OpenInputFile(ifstream& inFile, string& infilename)
{
cout << "Enter the name of the .txt file that you want to open for input.\n";
cout << "Do not put spaces in the file name ";
cin >> infilename;
cout << endl;
inFile.open(infilename.c_str());
if (inFile.fail())
{
cout << "Sorry, the input file " << infilename <<" was not found"<< endl;\
return false;
}
cout << "Input file " << infilename << " is open for reading.\n\n";
return true;
}
void Pause()
{
cout << endl;
cin.ignore(80, '\n');
cout<<"Please hit the enter key to continue...\n";
cin.get();
}
void ReadStudentData(ifstream& infile, StudentType student[], int& numstudents)
{
string firstName,
LastName,
testScore;
int count = 0;
if( infile)
for (int count; count < NUM_STUDENTS; count++)
{
cin >> firstName[count] >> LastName[count] >> testScore[count];
student[count].studentName = firstName + ", " + LastName;
}
numstudents = count;
cout << numstudents << endl;
}
void AssignGrades(StudentType student[], int numstudents)
{
int i;
for(i=0;i< NUM_STUDENTS;i++)
switch((int)(student[i].testScore/10))
{case 10:
case 9: student[i].grade='A';
break;
case 8: student[i].grade='B';
break;
case 7: student[i].grade='C';
break;
case 6: student[i].grade='D';
break;
default: student[i].grade='F';
break;
}
}
int HighestScore(const StudentType student[], int numstudents)
{
int max=0,i;
for(i=1;i<numstudents;i++)
{
if(student[i].testScore>student[max].testScore)
max=i;
}
return max;
}
void PrintNamesWithHighestScore(const StudentType student[], int numstudents)
{
}
void DisplayAllStudents(const StudentType student[], int numstudents)
{
}
void GetLowHighRangeValues(int& lowRange, int& highRange)
{
}
void DisplayStudentsInRange(const StudentType student[], int numStudents, int lownum, int highNum)
{
}
void SortStudentsByName(StudentType student[], int numStudents)
{
}
void SortStudentsByScore(StudentType student[], int numstudents)
{
}