int main(void)
{
Link head;
int flag=0;
char username[10], choice;
printf("----------------------学生评教系统-------------------\n");
printf("请输入用户名:");
scanf("%s", username);
printf("请输入密码（六位）:");
//if(secret()==1)
{
printf("\n\n\n密码输入正确！！\n\n");
system("pause");
system("cls");
printf("--------------------欢迎登录学生评教系统-------------------\n\n");
printf("录入学生信息\n");
head = creat_list();
printf("按任意键返回主菜单!");
getch();
fflush(stdin);
system("cls");
do
{
system("cls");
printf("-----------------------------------欢迎来到主菜单-------------------------------\n");
printf("-----------------------------------1. 修改信息---------------------------------\n");
printf("-----------------------------------2. 删除信息---------------------------------\n");
printf("-----------------------------------3. 查询 ---------------------------------\n");
printf("-----------------------------------4. 排序 ---------------------------------\n");
printf("-----------------------------------5. 打印 ---------------------------------\n");
printf("-----------------------------------0. 退出系统---------------------------------\n\n\n");
choice = getch();
fflush(stdin);
system("cls");
switch(choice)
{
case '1': changeNode(head);
break;
case '2': removeNode(head);
break;
case '3':search(head);
break;
case '4':sortbynum(head);
break;
case '5':print(head);
break;
case '0':flag=1;
break;
}
}while(flag!=1);
}
system("pause");
return 0;
}
//definition section for setCoefficient
void Polynomial::setCoefficient(const double& newCoefficient,
const int& power)
{
if (head == nullptr)
{
addNode(head, newCoefficient, power);
}
else if (newCoefficient == 0.00)
{
removeNode(head, power);
}
else
{
changeNode(head, power, newCoefficient);
//definition section for changeNode
void changeNode(PolyNode*& cur, int p, double c)
{
if (cur == nullptr)
{
addNode(cur, c, p);
}
else if(cur->power < p)
{
addNode(cur, c, p);
}
else if (cur->power == p)
{
cur->coefficient = c;
}
else
{
changeNode(cur->next, p, c);
void filereader(FILE* in, int bflag, char* sym, int n){
FILE* iq = fopen("iq.txt", "w");
FILE* ob = fopen("ob.txt", "w");
int count = 0;
if(!bflag){
char ch;
int id;
while(!feof(in)){
fscanf(in,"%c",&ch);
if(ch == 'A'){
char side;
char* symbol = (char*)malloc(sizeof(char*));
int quantity;
double price;
fscanf(in,"%d %c %s %d %lf\n",&id, &side, symbol, &quantity, &price);
if(!strcmp(sym,symbol)){
hashAdd(id, side, symbol, quantity, price);
//printf("%ld %c %s %d %lf\n", id, side, symbol, quantity, price);
//count++;
}
}else if(ch == 'X'){
char* symbol = (char*)malloc(sizeof(char*));
fscanf(in,"%d %s\n",&id, symbol);
hashDel(id);
}else if(ch == 'T'){
int id;
char* symbol = (char*)malloc(sizeof(char*));
int quantity;
fscanf(in, "%d %s %d\n", &id, symbol, & quantity);
if(!strcmp(sym,symbol)){
changeNode(id, quantity);
}
}else if(ch == 'R'){
int id;
char* symbol = (char*)malloc(sizeof(char*));
int quantity;
double price;
fscanf(in, "%d %s %d %lf\n", &id, symbol, &quantity, &price);
changePnode(id, quantity, price);
}else if(ch == 'C'){
int id;
char* symbol = (char*)malloc(sizeof(char*));
int quantity;
fscanf(in, "%d %s %d\n", &id, symbol, & quantity);
if(!strcmp(sym,symbol)){
changeNode(id, quantity);
}
}
count++;
//printf("count %d\n", count);
//printf("n in file %d\n", n);
if(count == n){
count = 0;
double sellPrice = 0.0;
double buyPrice = 0.0;
if(sell != NULL)
sellPrice = sell->price;
if(buy != NULL)
buyPrice = buy->price;
fprintf(iq, "%lf %lf\n", sellPrice, buyPrice);
}
}
}else{
char c;
while(!feof(in)){
fread(&c, sizeof(char), 1,in);
if(c == 'A'){
int id;
char side;
char *symbol = (char *) malloc(sizeof(char *));
int quantity;
double price;
fread(&id,sizeof(int),1,in);
fread(&side,sizeof(char),1,in);
fread(symbol,sizeof(char),4,in);
symbol[strlen(symbol)] = '\0';
fread(&quantity,sizeof(int),1,in);
fread(&price,sizeof(double),1,in);
if(!strcmp(sym,symbol)){
hashAdd(id, side, symbol, quantity, price);
//printf("%ld %c %s %d %lf\n", id, side, symbol, quantity, price);
}
}
if(c == 'X'){
int id;
char *symbol = (char *) malloc(sizeof(char *));
fread(&id,sizeof(int),1,in);
fread(symbol,sizeof(char),4,in);
symbol[strlen(symbol)] = '\0';
hashDel(id);
}
if(c == 'T'){
int id;
char *symbol = (char *) malloc(sizeof(char *));
int quantity;
fread(&id,sizeof(int),1,in);
fread(symbol,sizeof(char),4,in);
symbol[strlen(symbol)] = '\0';
fread(&quantity,sizeof(int),1,in);
changeNode(id, quantity);
}
if(c == 'C'){
int id;
char *symbol = (char *) malloc(sizeof(char *));
int quantity;
fread(&id,sizeof(int),1,in);
fread(symbol,sizeof(char),4,in);
symbol[strlen(symbol)] = '\0';
fread(&quantity,sizeof(int),1,in);
changeNode(id,quantity);
}
if(c == 'R'){
int id;
char *symbol = (char *) malloc(sizeof(char *));
int quantity;
double price;
fread(&id,sizeof(int),1,in);
fread(symbol,sizeof(char),4,in);
symbol[strlen(symbol)] = '\0';
fread(&quantity,sizeof(int),1,in);
fread(&price,sizeof(double),1,in);
changePnode(id, quantity, price);
}
}
}
printhash(ob);
}
