C程序设计语言--使用GCC（5）

cforth.c代码更新，解决了多余的每一个空格键会在DS栈留下一个0的问题。代码如下：

#include <stdio.h>
#include <string.h>
int ds[256],rs[256];
int *dsp=ds,*rsp=rs;
int flag;
#include "code_words.h"
#include "colon_words.h"

char inputBuff[1024];
char strBuff[30];

int main()
{
    printf("Cforth 0.1.0, Copyright (C) 2008-2012 Free Software Foundation, Inc.\n");
    printf("Cforth comes with ABSOLUTELY NO WARRANTY; for details type `license'\n");
    printf("Type `bye' to exit\n");
    while (1){
        int i=0;
        int j=0;
        gets(inputBuff);
        while(inputBuff[j] != '\0'){
            if(inputBuff[j]!= ' '){
                strBuff[i] = inputBuff[j];
                i++;
                j++;
            }
            else {
                strBuff[i]='\0';
                if ( !strcmp(".s",strBuff) )        showDS();
                else if( !strcmp("dup",strBuff) )    dup();
                else if( !strcmp(".",strBuff) )     showtopDS();
                else if( !strcmp(">r",strBuff) )    tor();
                else if( !strcmp("r>",strBuff) )     rto();
                else if( !strcmp("drop",strBuff) )     drop();
                else if( !strcmp("+",strBuff) )     add();
                else if( !strcmp("-",strBuff) )     sub();
                else if( !strcmp("*",strBuff) )     mul();
                else if( !strcmp("/d",strBuff) )     ddiv();
                else if( !strcmp("/",strBuff) )     div();
                else if( !strcmp("%",strBuff) )     mod();
                else if( isNum() )                    chgNum();
                else if( !strcmp("say",strBuff) )     say();
                else if( !strcmp("bye",strBuff) )     return 0;
                else printf("\n[%s]?\n",strBuff);

                for(i=0;i<30;i++) strBuff[i]='\0';
                i=0;
                j++;
               }
          }
          showOK();
      }
    return 0;
}

int isNum()
{
    char *str=strBuff;
    while(*str) {
        if(*str<'0' || *str>'9') return 0;
        str++;
    }
    return 1;
}

int chgNum()
{
    char *str=strBuff;
    int sum=0;
    while(*str) {
        sum=10*sum+(int)(*str-'0');
        str++;
    }
    //如果这个数字字符串只有一个'\0'，则直接返回0。
    //用来解决多余的空格键误操作DS的BUG
    if(str==&strBuff[0]) return 0;
    push(sum);
    return 0;
}

int showOK()
{
    printf("OK\n");
    return 0;
}

int say()
{
    gets(strBuff);
    printf("cforth: [%s]\n",strBuff);
    return 0;
}