Thread: Compile Error

First off, I am new fellas so take it easy please (just started a week ago)

So I am currently trying to compile this:

Code:

#include <stdio.h>
#include <windows.h>
int main (void)
{
	int num 1 = 32,
		num 2 = 27,
		mark = 9999,
		count = 0;
	char letterGrade = '?';
	system ("cls");
	while (count < 2)
	{
		printf ("\nMark = %d",mark);
		printf ("\nGrade = %c\n\n",letterGrade);
		mark = num1 + num2;
		if (mark > 50) letterGrade = 'P';
		else letterGrade = 'F';
		count = count + 1;
	}
	system ("pause");
	return 0;
}

I am currently using Dev C++ and Im getting when trying to compile:
[Error] no input files
Grades.o: No Such files or directory
[Warning] linker input file unused because linking not done

Suggestions would be greatly appreciated

Thank you