Char to int conversion

chartoint.c

#include "stdio.h"

int main()
{
	char c = 'a';

	int d, e;

	d = c - 'a';

	e = c;

	printf("%d", d); //Evalutes to 0.  Trippy!

	printf("%d", e); //Evaluates to 97 - the ASCII value.

	return 0;
}