animals.c

c primer plus 第五版 的源代码

/* animals.c -- uses a switch statement */
#include <stdio.h>
#include <ctype.h>
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)
            continue;
        if (islower(ch))     /* lowercase only          */
            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");
            }                /* end of switch           */
        else
            printf("I recognize only lowercase letters.\n");
        while (getchar() != '\n')
              continue;      /* skip rest of input line */
        printf("Please type another letter or a #.\n");
    }                        /* while loop end          */
    printf("Bye!\n");
  
    return 0;
}