练习1-10

int main(int argc, char** argv) {
    int nspace = 0;
    int c;
    while((c=getchar())!=EOF){
        if(c=='	')
            printf("\t");
        if(c=='\')
            printf("\");
        if(c!='')
            if(c!='	')
                if(c!='\')
                    putchar(c);
    }
    return 0;
}