Uva 489 - Hangman Judge

这是第四章的做的第一个题，说来惭愧，到现在才做了这么点题，要加把劲了！

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
    int m,n,i,j,k,r,s,t,round,la,lb,lan,x,score;
    char a[1000],b[1000],answer[100];
    while(scanf("%d",&round) != EOF)
    {
        if(round == -1)
            break;
        memset(a,0,sizeof(a));
        memset(b,0,sizeof(b));
        memset(answer,0,sizeof(answer));
        s=0;  x=1;
        getchar();
        gets(a);    la=strlen(a);
        gets(b);    lb=strlen(b);
        for(i=0; i<la; i++)
            for(j=i+1; j<la; j++)
                if(a[i] == a[j])
                    a[j]=x++;
        t=0;
        for(i=0; i<la; i++)
            if(a[i] >=97 && a[i] <= 122)
                answer[t++]=a[i];
        lan=strlen(answer);
        for(i=0; i<lb; i++)
            for(j=i+1; j<lb; j++)
                if(b[i] == b[j])
                    b[j]=x++;
        printf("Round %d\n",round);
        score=0;  s=0;
        for(i=0; i<lb; i++)
        {
            r=0;
            for(j=0; j<lan; j++)
                if( b[i] == answer[j])
                    r=1;
            if(r==1)
                score++;
            else
                s++;
            if(score == lan && s<=6)
            {
                printf("You win.\n");
                goto loop;
            }
        }
        if(score < lan && s<=6)
            printf("You chickened out.\n");
        else if(s>6)
            printf("You lose.\n");
       loop: continue;
    }
    return 0;
}