// ²òÅú4.3 member.c
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

typedef struct member {
    char name[20];
    char comment[40];
    struct member *next;
} Member;

void write_member(Member *mp,int n,FILE *ofp) {
    if (mp==0) return;
    if (ofp==stdout) printf("%4d:", n);
    fprintf(ofp, "%-20s%-40s\n", 
             mp->name, mp->comment );   
}

void separate(const char *s, char *s1, char *s2) {
    int i, i1, i2;
    for(i=0; s[i]; i++) 
        if (s[i]==' ') break;
    strncpy(s1, s, i);

    for (i1=0; s[i+i1]==' ';i1++) ;
    for (i2=0; s[i+i1+i2]  ;i2++) ;
    strncpy(s2, s+i+i1, i2); 
}

void makelist(char **list, Member *m) {
    Member *mp = malloc(sizeof(Member)); mp->next=0;
    m->next = mp;
    while (*list) {
         Member *mp2 = malloc(sizeof(Member));
//       sscanf(*list,"%s %s", mp->name, mp->comment);
	 separate(*list, mp->name, mp->comment);
         mp->next = mp2; mp = mp2;
         list++;
    }
    mp->next = 0;
}

int length(const Member *mp) {
    if (mp==0) return 0;
    int c=0;
    Member *p=mp->next;
    while (p && p->next) { p=p->next; c++; }
    return c;
}

char *input[] = {
   "abc ABC" , "def   DEF",
   "ghi GHI" , "jkl       JKL"
};

Member m;

int main() {
    makelist(input, &m);
    Member *mp=&m;
    int n=0;
    while (mp->next) {
       write_member(mp, n++, stdout);
       mp=mp->next;
    }
    printf("length=%d\n", length(&m));
}