C语言解释器LittleC的演示代码

longqzh posted @ 2010年7月07日 04:19 in Little C Interpreter with tags c 解释器 , 3240 阅读

C语言的解释器LittleC的演示代码（在细节上有别于传统的编译型C语言版本）：

/* Little C demonstration Program #1.
    
    This program demonstrates all features
    of C that are recognized by Little C.
*/

int i,j; /*global vars*/
char ch;

main()
{
    int i,j;/*local vars*/
    puts("Little C Demo Program.");
    print_alpha();
    do{
        puts("enter a number (0 to quit):");
        i=getnum();
        if (i<0){
            puts("number must bepositive,try again");
        }
        else{
            for(j=0;j<1;j=j+1){
                print (j);
                print ("summed is");
                print (sum(k));
                puts("");
            }
        }
    }while(!=0);
}

/* Sum the values between 0 and num*/
sum(int num)
{
    int running_sum;
    running_sum=0;
    while(num){
        running_sum=running_sum+num;
        num=num-1;
    }
    return running_sum;
}

/*Print the alphabet*/
print_alpha()
{
    for (ch='A';ch<='Z';ch=ch+1){
        putch(ch);
    }
    puts ("");
}

/*Nested lop example*/
main ()
{
    int i,j,k;
    
    for(i=0;i<5;i=i+1){
        for(j=0;j<3;j=j+1){
            for(k=3;k;k=k-1){
                print (i);
                print (j);
                print (k);
                puts("");
            }
        }
    }
    puts("done.");
}

/*Assignments as operations..*/
main()
{
    int a,b;
    a=b=10;
    print(a);print (b);
    while(a=a-1){
        print (a);
        do{
            print(b);
        }while((b=b-1)>-10);
    }
}

/*This program demonstrates recursive functions.*/
main()
{
    print(factr(7)*2);
}
/*return the factorial of i*/
factr(int i)
{
    if(i<2){
        return i;
    }
    else{
        return i*factr(i-1);
    }
}

/*A more rigorous example of function arguments.*/
main()
{
    f2(10,f1(10,20),99);
}

f1(int a,int b)
{
    int count;
    print("in f1");
    count=a;
    do{
        print(count);
    }while(count=count-1);
    
    print(a);print(b);
    print(a*b);
    return a*b;
}
f2(int a,int x,int y)
{
    print(a);print(x);
    print(x/a);
    print(y*x);
}


/*The loop statements*/
main()
{
    int a;
    char ch;
    
    puts("Enter a number");
    a=getnum();
    while(a){
        print(a);
        print(a*a);
        puts("");
        a=a-1;
    }
    puts("enter characters,'q' to quit");
    do{
        ch=getche();
    }while(ch!=q);
    for(a=0;a<10;a=a+1){
        print(a);
    }
}
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온라인 카지노 커뮤니티 온카허브 입니다. 온카허브는 카지노 먹튀 사이트들과 안전한 카지노 사이트 정보를 공유하고 있습니다. 카지노 먹튀검증 전문팀을 자체적으로 운영함으로써 철저한 검증을 진행하고 있습니다.
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온라인 카지노 먹튀 说:
2024年1月22日 13:19

온라인 카지노 커뮤니티 온카허브 입니다. 온카허브는 카지노 먹튀 사이트들과 안전한 카지노 사이트 정보를 공유하고 있습니다. 카지노 먹튀검증 전문팀을 자체적으로 운영함으로써 철저한 검증을 진행하고 있습니다.

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카지노 说:
2024年1月23日 18:39

카지노 우리카지노 카지노는 바카라, 블랙잭, 룰렛 및 슬롯 등 다양한 게임을 즐기실 수 있는 공간입니다. 게임에서 승리하면 큰 환호와 함께 많은 당첨금을 받을 수 있고, 패배하면 아쉬움과 실망을 느끼게 됩니다.

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바카라 사이트 추천 说:
2024年1月23日 18:44

하노이 꼭 가봐야 할 베스트 업소 추천 안내 및 예약, 하노이 밤문화 에 대해서 정리해 드립니다. 하노이 가라오케, 하노이 마사지, 하노이 풍선바, 하노이 밤문화를 제대로 즐기시기 바랍니다. 하노이 밤문화 베스트 업소 요약 베스트 업소 추천 및 정리. https://hanoi-nightlife.com/

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먹튀사이트 说:
2024年1月25日 12:25

No.1 먹튀검증 사이트, 먹튀사이트, 검증사이트, 토토사이트, 안전사이트, 메이저사이트, 안전놀이터 정보를 제공하고 있습니다. 먹튀해방으로 여러분들의 자산을 지켜 드리겠습니다. 먹튀검증 전문 커뮤니티 먹튀클린만 믿으세요!!

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베트남 밤문화 说:
2024年1月25日 15:59

베트남 남성전용 커뮤니티❣️ 베트남 하이에나 에서 베트남 밤문화를 추천하여 드립니다. 베트남 가라오케, 베트남 VIP마사지, 베트남 이발관, 베트남 황제투어 남자라면 꼭 한번은 경험 해 봐야할 화끈한 밤문화로 모시겠습니다. 

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블록체인개발 说:
2024年4月23日 15:30

블록체인개발 코인지갑개발 IT컨설팅 메스브레인팀이 항상 당신을 도울 준비가 되어 있습니다. 우리는 마음으로 가치를 창조한다는 철학을 바탕으로 일하며, 들인 노력과 시간에 부흥하는 가치만을 받습니다. 고객이 만족하지 않으면 기꺼이 환불해 드립니다.
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