00001
00009 #include<stdio.h>
00010 #include"numbers.h"
00011
00017 static number addInt(const number x,const number y);
00023 static number multInt(const number x,const number y);
00027 static number getUnitInt();
00031 static number getZeroInt();
00035 static void displayInt(const number x);
00036
00037
00042 number getIntNumber(const int n){
00043 number t ={ INT_NUMBER,
00044 {n},
00045 &addInt,
00046 &multInt,
00047 &getUnitInt,
00048 &getZeroInt,
00049 &displayInt};
00050 return t;
00051 }
00052
00053 static number addInt(const number a, const number b){
00054 number c=a;
00055 if (a.type!=INT_NUMBER || b.type!=INT_NUMBER){
00056 return error;
00057 }
00058 c.val.intval=a.val.intval+b.val.intval;
00059 return c;
00060 }
00061
00062 static number multInt(const number a, const number b){
00063 number c=a;
00064 if (a.type!=INT_NUMBER || b.type!=INT_NUMBER){
00065 return error;
00066 }
00067 c.val.intval=a.val.intval*b.val.intval;
00068 return c;
00069 }
00070
00071 static number getUnitInt(){
00072 return getIntNumber(1);
00073 }
00074
00075 static number getZeroInt(){
00076 return getIntNumber(0);
00077 }
00078
00079 void displayInt(const number x){
00080 printf("%d",x.val.intval);
00081 }
00082
