C和指针 第十四章 习题

#include <stdio.h>

void print_ledger_long(){
    printf("function print_ledger_long\n");
}

void print_ledger_detailed(){
    printf("function print_ledger_detailed\n");
}

void print_ledger_default(){
    printf("function print_ledger_default\n");
}

void print_ledger(){
#ifdef OPTION_LONG
    print_ledger_long();
#else
    #ifdef OPTION_DETAILED
        print_ledger_detailed();
    #else
        print_ledger_default();
    #endif
#endif
}
int main()
{

    print_ledger();
    return 0;
}

#ifndef C_CPU_TYPE_H
#define C_CPU_TYPE_H
#define CPU_VAX     1
#define CPU_68000   2
#define CPU_68020   3
#define CPU_80386   4
#define CPU_6809    5
#define CPU_6502    6
#define CPU_3B2     7
#define CPU_UNKNOWN 8
#endif //C_CPU_TYPE_H

#include <stdio.h>
#include "cpu_type.h"

int cpu_type()
{
#ifdef VAX
    return CPU_VAX;
#elif M68000
    return CPU_68000;
#elif M68020
    return CPU_68020;
#elif I80386
    return CPU_80386;
#elif X6809
    return CPU_6809;
#elif X6502
    return CPU_6502;
#elif U3B2
    return CPU_3B2;
#else
    return CPU_UNKNOWN;
#endif
}
int main()
{
    printf("%d", cpu_type());
    return 0;
}