Thread: Is this right

I'm using the Miracle C compiler with windows XP and when I go to compile this:

Code:

#include <stdio.h>

int main()
{
    float a;
    a = 0;
    while (a <= 100)
    {
        printf("%6.2f degrees F = %6.2f degrees C\n",
            a, (a - 32.0) * 5.0 / 9.0);
        a = a + 10;
    }
    fgetc(stdin);
    return 0;
}

Miracle C says back to me:

Miracle C Compiler (r3.2), written by bts.
Compiling C:\Documents and Settings\Daniel Granger\My Documents\C\f2c.c
main

C:\Documents and Settings\Daniel Granger\My Documents\C\f2c.c: line 7: unrecognised types in comparison
'while (a <= 100) { printf("%6.2f degrees F = %6.2f degrees C\n", a, (a - 32.0) * 5.0 / 9.0)'
aborting compile

Can some please tell me whats going wrong