7.11 animals.c 程序

#include 
    
     #include 
     
      int main(void){    char ch;    printf("Give me a letter of the alphabet, and I will give ");    printf("an animal name\nbeginning with that letter.\n");    printf("Please type in a letter; type # to end my act.\n");    while ((ch = getchar())  != '#')    {        if ('\n'  == ch)     // 不会担心变成赋值语句            continue;        if (islower(ch))     /* 只接受小写字母 */            switch (ch)        {            case 'a':                   printf("argali, a wild sheep of Asia\n");                   break;            case 'b':                   printf("babirusa, a wild pig of Malay\n");                   break;            case 'c':                   printf("coati, racoonlike mammal\n");                   break;            case 'd':                   printf("desman, aquatic, molelike critter\n");                   break;            case 'e':                   printf("echidna, the spiny anteater\n");                   break;            case 'f':                   printf("fisher, brownish marten\n");                   break;            default:                   printf("That's a stumper!\n");        }            /*  switch 结束   */        else             printf("I recognize only lowercase letters.\n");        while (getchar() != '\n')            continue;    /* 跳过输入行的剩余部分 */        printf("Please type another letter or a #.\n");    }                     /*  while循环结束  */    printf("Bye!\n");    return 0;}