Calculate grade of a student.

[teoh]

class StudentMark
{
public:
	 
	   StudentMark();

	   StudentMark(double);
	   double getGrade();
};
#include"grade.h"
#include<iostream>
using namespace std;
StudentMark::StudentMark()
{
	double mark=0.0;
}
/*StudentMark::StudentMark(double dNewmark)
{  
   dmark=dNewmark;
}*/
StudentMark::StudentMark
{
	if(mark>=80&&mark=<100)

		grade='A';
	
else
	 
	if(mark>=75&&mark<80)

        grade='A-';

else

	if(mark>=70&&mark<75)

		grade='B+';

else
	
	if(mark>=65&&mark<70)
         grade='B';

else 


	if(mark>=60&&mark<65)

		grade='B-';

else 


	if(mark>=55&&mark<60)

		    grade='C+';
	
else 
 
	
	if(mark>=45&&mark<55)

		grade='C-';
	
else 

	if(mark>=40&&mark<45)

		grade='D';

else 
		grade='F';

	StudentMark::getGrade()
		return grade;
	}
#include<iostream>
#include"grade.h"
#include<string.h>
using namespace std;

int main(void)
{

	   StudentMark studentmark1(60.0);
	   StudentMark studentmark2(75.5);
	   StudentMark studentmark3(89.9);

	cout<<"Your Mark is "
		<<studentmark1.StudentMark<<"your Grade is"<<  studentmark1.getGrade<<endl;
	
	return 0;
}

this is my code and i still hv some error,the error show is like this

1>c:\users\teoh\documents\visual studio 2008\projects\lab1iii)\lab1iii)\grade main.cpp(14) : error C2274: 'function-style cast' : illegal as right side of '.' operator
1>grade.cpp
1>c:\users\teoh\documents\visual studio 2008\projects\lab1iii)\lab1iii)\grade.cpp(13) : error C2470: 'StudentMark::{ctor}' : looks like a function definition, but there is no parameter list; skipping apparent body
how i must do to solve this problem

The compile time errors tell you exactly how to fix the problem. And a closer look at your code also shows you that you've made in mistake with your constructors.