Calculating grades with Decimals

KaraPardue (46)
Alright, this is a refresher assignment for my Advanced C++ class, and I have the program doing everything it is supposed to, except it is not recognizing the correct grade when I put in a decimal, such as 59.6. I thought that I would have to use a float type for the grade, but I cannot use float with switch/case statements, which he required us to use. Why is it not working correctly, or how could I fix it?

Here is my code:

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// Assignment One - Kara Pardue
// 1/20/2012
// This program should ask the user for their name and their numerical grade.
// It should then use if/else statements to determine the letter grade.
// After this, it should use switch/case statements to print the user's name and letter grade.
// If the letter grade is not between 0 and 100, the program should ask the user to re-enter their grade.

#include<iostream>
#include <string>
using namespace std;

int main()
{ 
	string name;
	int grade;

	cout << "Please enter your name." << "  ";
	cin >> name;

	cout << "Please enter your numerical grade." << " " ;
	cin >> grade;

	if (grade < 0 || grade > 100)
	{cout << "Numerical grade must be 0 to 100." << endl;
	 cout << "Please re-enter your numerical grade." << " ";
	 cin >> grade;
	}


	if(grade >= 89.5 && grade <= 100)
	grade = 'A';

	else if(grade >= 79.5 && grade < 89.5)
	grade = 'B';

	else if(grade >= 69.5 && grade < 79.5)
	grade = 'C';

	else if(grade >= 59.5 && grade < 69.5)
	grade = 'D';

	else if (grade < 59.5 && grade >= 0)
	grade = 'F';


	switch (grade)
	{ 
	case 'A' : cout << "Hello, " << name << "! Your grade is an A." << endl;
				break;
	case 'B' : cout << "Hello, " << name << "! Your grade is a B." << endl;
				break;
	case 'C' : cout << "Hello, " << name << "! Your grade is a C." << endl;
				break;
	case 'D' : cout << "Hello, " << name << "! Your grade is a D." << endl;
				break;
	case 'F' : cout << "Hello, " << name << "! Your grade is an F." << endl;
	}

	system("pause");
	return 0;

}
Hippogriff (727)
If you have to do it like that you could just make grade a float and then use a different char variable to hold the letter grade and do the switch statements on.
Stewbond (2827)
I would agree: 
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float percent;
char grade;

// Your cin stuff

if (percent > 89.5 && percent <=100)
    grade = 'A';
// other if statments

switch (grade)
//Keep this stuff the same
KaraPardue (46)
I tried that before, but forgot to change one of the variables to the new one, so it messed up. Thanks for your help!
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