Cチェーンテーブル操作(一方向チェーンテーブル)の復習

Object-CはCのパッケージ言語(ランタイム、メッセージメカニズム)として使われています.Cに慣れていないとあまりにも遊びすぎます.勝手にocの内部に深く入り込んでもCに触れます.
runtime、GCD、Block、メッセージメカニズム..
すべての強力な機能を使用しない包装体(struct構造体).GCC/Clang(googleの下で使用できます.ClangはGCCよりも最適化されています)を使用して命令をコンパイルします.OCをCに変換します.
端末使用Clangコマンドリファレンス
clang -rewrite-objc file.m
ファイルを表示する.cppファイルはコンパイル変換のC
 
一方向チェーンテーブルの作成、挿入、反転

 //struct
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct Student_st
{
    char name[10];
    int  point;
   struct Student_st *stu;
} Student;

void CheckIsLinkTable(Student *student){
    Student *next = student->stu;
    if (next == NULL) {
        printf("    ,      
");
        exit(0);
    }
}

Student * CreateLink_Table(int num){
    printf("num is %d
",num);
    
    Student * head,*current,*temp;
    //    
    head = (Student *)malloc(sizeof(Student));
    if (head == NULL) {
        printf("       
");
        exit(0);
    }
    
    head ->name[0] = '\0';
    head ->point = 0;
    head -> stu = NULL;
    
    temp = head;
    for (int i = 0; i< num; i++) {
        current = (Student *)malloc(sizeof(Student));
        if (current == NULL) {
            printf("       
");
            exit(0);
        }
        current ->stu = NULL;

        
        printf("    %d          :name|89 
",i+1);
        char stuName[10] = "  ";
        int student_point = 0;
        char argValue[15] = "  ";
        
        scanf("%s",argValue);
        
        if (strstr(argValue,"|")==NULL) {
            printf("   |     Y|N Y     ,N   
");
            char content[5];
            scanf("%s",content);
            if (strcmp(content,"Y")==0) {
                scanf("%s",argValue);
            }else{
                exit(0);
            }
        }
        
        //     
        char *token;

        token = strtok(argValue,"|");
        int i = 0;
        while (token != NULL) {
            if (i>0) {
                student_point = atoi(token);
                printf("%d
",student_point);
            }else{
                ////char*         ？----> c     ，     ， 
                strncpy(stuName,token,sizeof(stuName));
                printf("%s
",token);
            }
            
            token = strtok(NULL,"|");
            i++;
        }
        strncpy(current->name,stuName,sizeof(current->name));
        current ->point = student_point;
        
        current->stu = NULL;
        temp ->stu = current;
        temp = current;
        
    }
    
    return head;
}

//  
void selectStudent(Student *student){
    CheckIsLinkTable(student);

    Student *next = student->stu;
    int i =0;
    while (next) {
        printf("index %d; studentName is %s;  point is %d
",i+1,next->name,next->point);
        next = next ->stu;
        i++;
    }
}
//  
Student * insertStudentLinkTable(Student *student,char *insertContent){
    //     
    if (!insertContent) {
        exit(0);
    }
    
    //     
    char *token;
    char stuName[10];
    char preStuName[10];
    int student_point;
    token = strtok(insertContent,"|");
    int i = 0;
    while (token != NULL) {
        if (i==1) {
            ////char*         ？----> c     ，     ， 
            strncpy(stuName,token,sizeof(stuName));
            printf("%s
",token);
        }else if(i==2){
            student_point = atoi(token);
            printf("%d
",student_point);
        }else{
            strncpy(preStuName,token,sizeof(preStuName));
            printf("%s
",token);
        }
        
        token = strtok(NULL,"|");
        i++;
    }
    Student *preStu;
    
    CheckIsLinkTable(student);
    //          
    Student *next = student->stu;
    int ind = 0;
    while (next) {
        if ((next->name) && strcmp(preStuName,next->name)==0) {
            printf("    %s    %d          
",preStuName,ind+1);
            preStu = next;
            break;
        }
        next = next->stu;
        ind++;
    }
    
    Student *nextStu = preStu->stu;
    //    
    Student *newStu = (Student *)malloc(sizeof(Student));
    if (newStu==NULL) {
        printf("      ");
        exit(0);
    }
    strncpy(newStu->name,stuName,sizeof(char[10]));
    newStu->point = student_point;
    newStu->stu = nextStu;
    
    preStu->stu = newStu;
    
    //    
    selectStudent(student);
    return student;
}

//  
Student *ReversionStudentLinkTable(Student *student){
    CheckIsLinkTable(student);
    
    Student *next,*current,*newLinkTable;
    next = NULL;
    current =NULL;
    newLinkTable = NULL;
    current = student->stu;
    while (current) {
        //            
        next = current->stu;
        //           ，                       
        current->stu = newLinkTable;
        //             
        newLinkTable = current;
        //      
        current = next;
    }
    
    //           
    Student *head = NULL;
    head = (Student *)malloc(sizeof(Student));
    head->name[0]='\0';
    head->point = 0;
    head->stu = newLinkTable;
    
    return head;
}

int main(void){
    char sf[15];
    
    /**
     *        
     */
    int num;
    printf ("       
");
    scanf("%d",&num);
    Student *link_stu = CreateLink_Table(num);

    
    /**
     *          
     */
    printf ("                    ，         |     |      
");
    scanf("%s",sf);

    link_stu = insertStudentLinkTable(link_stu,sf);
    
    /**
     *        
     */
    printf("    Y|N 
");
    scanf("%s",sf);
    if (strcmp(sf,"Y")==0) {
       Student *newLt= ReversionStudentLinkTable(link_stu);
        //  
        selectStudent(newLt);
    }
     return 0; 
}