没有来的及调试,请多多包涵: 这个程序的源代码有不少漏洞,正在修改之中,请提出批评指正,谢谢!!! #include"stdio.h" #include"string.h" #include"stdlib.h" #define N 3 #define increase 4 #define NULL 0 typedef struct stud { char name[15]; int age; float score; struct stud *next; }L;/*定义表的类型*/ L*p,*that,*othernew,*x,*you,*head; L * enter_record ()/*加入记录*/ { int n,i=0; float m; L *new; head=new=(L*)malloc(N*sizeof(L)); if(!new) { printf("failure for applying room!\n"); exit(0); } else { p=new; while(i<N) { i++; printf("please enter name:"); fflush(stdin); gets(p->name); printf("\n"); printf("enter age:"); fflush(stdin); scanf("%d",&n); printf("\n"); p->age=n; printf("enter the score:"); fflush(stdin); scanf("%f",&m); p->score=m; p=p->next; } } return head; } L *show_record()/*显示记录*/ { int c=1; L *this; printf("the records are:\n"); this=head; while(this->next!=NULL) { printf("the %d th is:\n"); printf("the name is:%s\n",this->name); printf("the age is:%d\n",this->age); printf("the score is:%f\n"); this=this->next; c++; } printf("the number of records is:%d",c); return head; } L *delete_record()/*删除记录*/ { int d; printf("which one record do you want to delete?number:"); fflush(stdin); scanf("%d",&d); printf("\n"); if(d>N-1||d<0) { printf("error due to the wrong input!\n"); exit(0); } else { int e=1; that=head; while(that->next!=NULL&&e<d) { that=that->next; e++; } that->next=that->next->next; free(that->next); printf("the record has been deleted!\n"); } return head; } L * insert_record()/*加入新的记录*/ { int y; printf("where will you insert the new record?number:"); fflush(stdin); scanf("%d",&y); printf("\n"); if(y>=1&&y<=N) { int z=1,g,h; x=head; while(x->next!=NULL&&z<=N) { z++; x=x->next; } othernew=(L*)malloc(sizeof(L)); x->next=othernew; othernew=x->next->next; printf("please input the name new record:%s\n",othernew->name); scanf("%d",&g); printf("enter the age:%d\n",g); scanf("%d",&h); printf("enter the score:%d\n",h); printf("the new record has been save!\n"); printf("the new record is:\n"); printf("the name is:%s\n",othernew->name); printf("the age is:%d\n",othernew->age); printf("the score is:%d\n",othernew->score); } return head; } main()/*主函数*/ { int n; clrscr(); printf("welcome to the student mangement system:\n"); printf("============================================================================\n");/*功能菜单*/ printf("1. Enter  students' records                            2.show the all  records\n"); printf("3.Delete some students' records                        4.Insert new record"); printf("5.exit mangement system.\n"); printf("=============================================================================\n"); printf("please choose from 1 to 5.No:"); do { fflush(stdin); scanf("%d",&n); switch(n) { case 1: head=enter_record (); break; case 2: head=show_record(); break; case 3: head=delete_record(); break; case 4: head=insert_record(); break; case 5: exit(0); default: printf("error due to the wrong input !!please input it again!!\n"); } }while(1); }

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