Initial commit of skeleton code.

Makefile

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+OBJS=abCalc.o abCalcExpr.o abCalcExprReal.o abCalcExprInt.o abCalcStack.o
+NAME=abCalc
+
+all: $(NAME)
+
+$(NAME): $(OBJS)
+	cc -o $(NAME) $(OBJS)
+
+clean:
+	rm -f $(NAME) $(OBJS)

abCalc.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+
+int main(void)
+{
+    printf("Hello, world!\n");
+    exit(0);
+}

abCalcExpr.c

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+#include "abCalcExpr.h"

abCalcExpr.h

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+/* 
+    abCalcExpr.h
+        By: Jeremy Rand
+ */
+
+
+typedef enum abCalcExprType {
+    abCalcExprTypeReal,
+    abCalcExprTypeInt
+} abCalcExprType;
+
+
+typedef double abCalcRealType;
+typedef long abCalcIntType;
+
+
+typedef struct abCalcExpr {
+    abCalcExprType type;
+    union {
+        abCalcRealType real;
+        abCalcIntType integer;
+    } u;
+} abCalcExpr;
+
+
+typedef struct abCalcExprCallbacks {
+    abCalcExpr * (*parseExpression)(abCalcExpr *expr, char *buffer);
+} abCalcExprCallbacks;