C / C++ / MFC

AnyOne Please Guide Me on my This Error <
    "Stack around the variable 'Student' was corrupted."
    
    I Receives it when I copy Members of Structure  "StudentInfo" into Structure "FailStudents" 
    using  
    list[i].FullName  =  Student[i].FullName ;
    list[i].RollNo = Student[i].RollNo;
    
    Here list is Structure Variable of Structure "FailStudents" and Student is Structure Variable of Structure "StudentInfo"
    
    
    
    /*
    An array stores details of 5 students (rollno, name, marks in three subject).
    Write a program to create such an array and print out a list of students who have failed in more than one subject.
    */
    #include<iostream>
    #include<string>
    using namespace std;
    
    const int No_Of_Students = 5;
    
    void main()
    {
    	struct StudentInfo
    	{
    		int RollNo;
    		string FullName;
    		int marks[2];
    	};
    	StudentInfo Student[No_Of_Students];
    	struct FailStudents
    	{
    		int RollNo;
    		string FullName;
    		int marks[2];
    	};
    	FailStudents list[No_Of_Students];
    	int NoOfFailStudents = 0;
    	for (int i = 0; i < No_Of_Students; i++)
    	{
    		cout << "Enter Student NO " << i + 1 << \" FullName : \t";
    		cin >> Student[i].FullName;
    		cout << "Enter Student NO " << i + 1 << " Roll Number : \t";
    		cin >> Student[i].RollNo;
    		int failSubjects = 0;
    
    		// Subjects Marks Input 
    		for (int k = 0; k <= 2; k++) {
    			cout << "Enter Student NO " << i + 1 << " Subject " << k + 1 << " Marks : \t";
    			cin >> Student[i].marks[k];
    
    			if ((Student[i].marks[k]) < 40)
    			{
    				failSubjects++;
    			}
    		}
    		if (failSubjects > 1)
    		{
    			NoOfFailStudents++;
    			list[i].FullName = Student[i].FullName;
    
    			list[i].RollNo = Student[i].RollNo;
    			cout << "Student Name "<< list[i].FullName << "is fail"<< endl;
    			cout << "Having Rol Number  " << list[i].RollNo << endl;
    			// list[i].marks = Student[i].marks;
    		}
    		cout << "\n \n ";
    	}
    
    	system("pause");