C primer plus 练习题 第七章

1.

#include <stdio.h>

#define SPACE ' '
#define NEWLINE '
'

int main()
{
    int spaces,newlines,others;
    char ch;
    spaces = newlines = others = 0;
    while((ch=getchar())!= '#')
    {
        /*
        if(ch == SPACE)
        {
            spaces++;
        }else if(ch == NEWLINE)
        {
            newlines++;
        }else
        {
            others++;
        }*/
        switch(ch)
        {
        case SPACE:
            spaces++;
            break;
        case NEWLINE:
            newlines++;
            break;
        default:
            others++;
            break;
        }
    }
    printf("spaces=%d, newlines=%d, others=%d 
", spaces, newlines, others);
    getchar();
    return 0;
}

 2.

#include <stdio.h>

int main()
{
    int i;
    char ch;
    printf("quit input #");
    for(i=1; (ch=getchar())!='#'; i++)
    {
        printf("%c -- %d 	", ch, ch);
        if(i%8 == 0){
            printf("
");
        }
    }
    getchar();
    return 0;
}