計(jì)算機(jī)等級(jí)考試二級(jí)C語(yǔ)言上機(jī)模擬試題及答案

函數(shù)ReadDat()實(shí)現(xiàn)從文件ENG.IN中讀取一篇英文文章存入到字符串?dāng)?shù)組xx中; 請(qǐng)編制函數(shù)ComWord()分別計(jì)算出單詞長(zhǎng)度2,4,6,8的單詞數(shù)以及單詞總數(shù)并依次存入整型數(shù)組yy[0]至yy[4]中,最后調(diào)用函數(shù)WriteDat()把結(jié)果yy輸出到文件PS3.OUT中。原始數(shù)據(jù)文件存放的格式是:每行的寬度均小于80個(gè)字符, 含標(biāo)點(diǎn)符號(hào)和空格。注意: 部分源程序存放在PROG1.C中。文章每行中的單詞與單詞之間用空格或其它標(biāo)點(diǎn)符號(hào)分隔, 每單詞均小于20個(gè)字符。請(qǐng)勿改動(dòng)主函數(shù)main()、讀數(shù)據(jù)函數(shù)ReadDat()和輸出數(shù)據(jù)函數(shù)WriteDat()的內(nèi)容。
    /*參考答案*/
    #include
    #include
    #include
    #include
    char xx[50][80] ;
    int yy[5] ;
    int maxline = 0 ; /* 文章的總行數(shù) */
    int ReadDat(void) ;
    void WriteDat(void) ;
    void ComWord(void)
    {
    int i,j,k,n,len,s[4] = {2,4,6,8};
    char word[20],c;
    memset(yy,0,5*sizeof(int));
    for(i = 0; i < maxline; i++)
    {
    len = strlen(xx);
    n = 0;
    for(j = 0; j < len+1; j++)
    {
    c = xx[j];
    if((c>='a' && c<='z') || (c>='A' && c<='Z'))
    {
    word[n] = c;
    n++;
    }
    else
    {
    word[n] = '\0';
    if(word[0] != '\0')
    {
    for(k = 0; k < 4; k++)
    if(n == s[k])
    yy[k]++;
    yy[4]++;
    }
    n = 0;
    }
    }
    }
    }
    void main()
    {
    int i ;
    clrscr() ;
    for(i = 0 ; i < 5 ; i++) yy = 0 ;
    if(ReadDat()) {
    printf("數(shù)據(jù)文件ENG.IN不能打開(kāi)!\n\007") ;
    return ;
    }
    ComWord() ;
    WriteDat() ;
    }
    int ReadDat(void)
    {
    FILE *fp ;
    int i = 0 ;
    char *p ;
    if((fp = fopen("eng.in", "r")) == NULL) return 1 ;
    while(fgets(xx, 80, fp) != NULL) {
    p = strchr(xx, '\n') ;
    if(p) xx[p - xx] = 0 ;
    i++ ;
    }
    maxline = i ;
    fclose(fp) ;
    return 0 ;
    }
    void WriteDat(void)
    {
    FILE *fp ;
    int i ;
    fp = fopen("ps3.out", "w") ;
    for(i = 0 ; i < 5 ; i++) fprintf(fp, "%d\n", yy) ;
    printf("單詞長(zhǎng)度為3的單詞數(shù)=%d\n", yy[0]) ;
    printf("單詞長(zhǎng)度為5的單詞數(shù)=%d\n", yy[1]) ;
    printf("單詞長(zhǎng)度為7的單詞數(shù)=%d\n", yy[2]) ;
    printf("單詞長(zhǎng)度為9的單詞數(shù)=%d\n", yy[3]) ;
    printf("單詞的總數(shù)=%d\n", yy[4]) ;
    fclose(fp) ;
    }