Question

#include "cradle.h"
#include <stdio.h>
#include <stdlib.h>
char tmp[MAX_BUF];
char Look;

int  Getchar()
{
    Look = Getchar();
    return Getchar;
}


void Error(char *s)
{
    printf("\nError: %s.",s);
}

void Abort(char *s)
{
    Error(s);
    exit(1);
}

void Expected(char *s)
{
    sprintf(tmp,"%s Expected",s);
    Abort(tmp);
}

void Match(char x)
{
    if(Look==x) {
        Getchar();
    } else {
        sprintf(tmp,"'%c'",x);
        Expected(tmp);
    }
}

char GetName()
{
    char c = Look;
    if(!isalpha(Look)) {
        sprintf(tmp,"Name");
        Expected(tmp);
    }

    Getchar();
    return toupper(c);
}

char GetNum()
{
    char c = Look;
    if(!isdigit(Look)) {
        sprintf(tmp,"Integer");
        Expected(tmp);
    }
    GetChar();

    return c;
}

void Emit(char *s)
{
    printf("\t%s", s);
}

void EmitLn(char *s)
{
    Emit(s);
    printf("\n");
}

void Init()
{
    Getchar();
}

对于编译器来说，我正在尝试自己构建，也试图取消它的空白，但它不起作用：

Cradle.c：在函数'Getchar'中：cradle.c：10：8：warning：return make 没有强制转换[-Wint-conversion]返回的指针整数 getchar函数; ^ /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o:na função_start': (.text+0x20): referência indefinida para main' /tmp/ccavx14D.o:nafunçãoGetNum': cradle.c:(.text+0x1a9): referência indefinida para GetChar'collect2：错误：ld返回1 退出状态

编译cradle.c时出错

0 个答案: