資料結構線性表兩種方式分享

第一種方式為老師說的陣列+結構體（課本上），我用的是c++，其實與c沒什麼不同（區別：cin是scanf，cout是print，new是malloc（）函式），我用的全域性變數，所以不用傳參。
程式碼1：

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#include<iostream>
#include<cstring>
using namespace std;
const int N = 1e4 + 5;

struct ss {
	char name[10], str[15];
	double test;
};

struct kk {
	ss data[N];
	int length;
}tests;

void scanfs(int);
void print();
void find1(char x[]);
void find2(int);
void cha(ss, int);
void shan(int);

int main() {
	int n, h;
	cout << "請輸入初始成績表人數：\n";
	cin >> n;
	scanfs(n);
	while (true) {
		cout << "請選擇您的操作：\n";
		cout << "1：輸出全部成績表\n";
		cout << "2：按姓名查詢\n";
		cout << "3：按指定位置查詢\n";
		cout << "4：在指定位置插入成績\n";
		cout << "5：刪除指定位置資訊\n";
		cout << "6：成績表中的人數\n";
		cout << "7：退出：\n";
		cin >> h;
		if (h == 7) break;
		if (h > 7 || h < 1) cout << "輸入錯誤！\n";
		switch (h) {
		case 1:print(); break;
		case 2:char x[10];
			cout << "請輸入您要查詢的姓名：\n";
			cin >> x;
			find1(x); break;
		case 3:int k;
			cout << "請輸入您要查詢的位置：\n";
			cin >> k;
			find2(k); break;
		case 4:ss x1; int k1;
			cout << "請按學號、姓名、成績、位置的順序輸入；\n";
			cout << "學號:\n"; cin >> x1.str;
			cout << "姓名:\n"; cin >> x1.name;
			cout << "成績:\n"; cin >> x1.test;
			cout << "插入位置\n"; cin >> k1;
			cha(x1, k1); break;
		case 5:int k2;
			cout << "請輸入您要刪除的位置：\n";
			cin >> k2;
			shan(k2); break;
		case 6:cout << "人數為：" << tests.length << endl;
		}
		cout << "----------輸入任意鍵返回----------\n";
		getchar(); getchar();
	}

	return 0;
}

void scanfs(int n) {
	cout << "請按學號、姓名、成績的順序輸入；\n";
	for (int i = 1; i <= n; i++) {
		printf("-----學生%d-----\n", i);
		cout << "學號:\n"; cin >> tests.data[i].str;
		cout << "姓名:\n"; cin >> tests.data[i].name;
		cout << "成績:\n"; cin >> tests.data[i].test;
	}
	tests.length = n;
}

void print() {
	if (tests.length == 0) {
		cout << "暫為空表\n"; 
		return;
	}
	printf("%15s%10s%8s\n", "學號", "姓名", "成績");
	for (int i = 1; i <= tests.length; i++)
		printf("%15s%10s%8.2lf\n", tests.data[i].str, tests.data[i].name, tests.data[i].test);
}

void find1(char x[]) {
	for (int i = 1; i <= tests.length; i++)
		if (strcmp(x, tests.data[i].name) == 0) {
			printf("%15s%10s%8s\n", "學號", "姓名", "成績");
			printf("%15s%10s%8.2lf\n", tests.data[i].str, tests.data[i].name, tests.data[i].test);
			return;
		}
	printf("查無此人！\n");
}

void find2(int k) {
	if (k > 0 && k <= tests.length) {
		printf("%15s%10s%8s\n", "學號", "姓名", "成績");
		printf("%15s%10s%8.2lf\n", tests.data[k].str, tests.data[k].name, tests.data[k].test);
		return;
	}
	printf("查無此人！\n");
}

void cha(ss x, int k) {
	if (tests.length == N) {
		printf("記憶體已滿！\n");
		return;
	}
	if (k > tests.length + 1) {
		printf("插入不在成績表中，請重新選擇插入位置\n");
		return;
	}
	tests.length++;
	for (int i = tests.length; i > k; i--)
		tests.data[i] = tests.data[i - 1];
	tests.data[k] = x;
}

void shan(int k) {
	if (k<1 || k>tests.length) {
		cout << "刪除位置不在成績表內\n";
		return;
	}
	for (int i = k; i < tests.length; i++)
		tests.data[i] = tests.data[i + 1];
	tests.length--;
}

第二種方式是連結串列，是上一種稍微做了改變（報告是兩種方式都要哦！）

程式碼2：

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#include<iostream>
#include<cstring>
using namespace std;

struct ss {
	char name[10], str[15];
	double test;
	ss* next;
};

ss* head;
int num;

void scanfs(int);
void print();
void find1(char x[]);
void find2(int);
void cha(ss, int);
void shan(int);

int main() {
	int n, h;
	cout << "請輸入初始成績表人數：\n";
	cin >> n;
	scanfs(n);
	while (true) {
		cout << "請選擇您的操作：\n";
		cout << "1：輸出全部成績表\n";
		cout << "2：按姓名查詢\n";
		cout << "3：按指定位置查詢\n";
		cout << "4：在指定位置插入成績\n";
		cout << "5：刪除指定位置資訊\n";
		cout << "6：成績表中的人數\n";
		cout << "7：退出：\n";
		cin >> h;
		if (h == 7) break;
		if (h > 7 || h < 1) cout << "輸入錯誤！\n";
		switch (h) {
		case 1:print(); break;
		case 2:char x[10];
			cout << "請輸入您要查詢的姓名：\n";
			cin >> x;
			find1(x); break;
		case 3:int k;
			cout << "請輸入您要查詢的位置：\n";
			cin >> k;
			find2(k); break;
		case 4:ss x1; int k1;
			cout << "請按學號、姓名、成績、位置的順序輸入；\n";
			cout << "學號:\n"; cin >> x1.str;
			cout << "姓名:\n"; cin >> x1.name;
			cout << "成績:\n"; cin >> x1.test;
			cout << "插入位置\n"; cin >> k1;
			cha(x1, k1); break;
		case 5:int k2;
			cout << "請輸入您要刪除的位置：\n";
			cin >> k2;
			shan(k2); break;
		case 6:cout << "人數為：" << num<< endl;
		}
		cout << "----------輸入任意鍵返回----------\n";
		getchar(); getchar();
	}

	return 0;
}

void scanfs(int n) {
	ss *te,*p;
	head = new ss;
	p = new ss;
	head->next = nullptr;
	cout << "請按學號、姓名、成績的順序輸入；\n";
	for (int i = 1; i <= n; i++) {
		te = new ss;
		printf("-----學生%d-----\n", i);
		cout << "學號:\n"; cin >> te->str;
		cout << "姓名:\n"; cin >> te->name;
		cout << "成績:\n"; cin >> te->test;
		te->next = nullptr;
		if (i == 1) head->next = te;
		else p->next = te;
		p = te;
	}
	num = n;
}

void print() {
	if (head->next == nullptr) {
		cout << "暫為空表\n";
		return;
	}
	ss* te=head->next;
	printf("%15s%10s%8s\n", "學號", "姓名", "成績");
	while (te != nullptr) {
		printf("%15s%10s%8.2lf\n", te->str, te->name, te->test);
		te = te->next;
	}	
}

void find1(char x[]) {
	ss* te = head->next;
	while (te != nullptr) {
		if (strcmp(x, te->name) == 0) {
			printf("%15s%10s%8s\n", "學號", "姓名", "成績");
			printf("%15s%10s%8.2lf\n", te->str, te->name, te->test);
			return;
		}
		te = te->next;
	}	
	printf("查無此人！\n");
}

void find2(int k) {  
	ss* te = head->next;
	int p = 0;
	while (te!= nullptr && p < k-1) {
		te = te->next;
		p++;
	}
	if (k > 0 && k <= num) {
		printf("%15s%10s%8s\n", "學號", "姓名", "成績");
		printf("%15s%10s%8.2lf\n", te->str, te->name, te->test);
		return;
	}
	printf("查無此人！\n");
}

void cha(ss x, int k) {
	ss* te,*p=head;
	int p1 = 0;
	if (k > num + 1) {
		printf("插入不在成績表中，請重新選擇插入位置\n");
		return;
	}
	num++;
	te = &x;
	while (p->next != nullptr && p1++ < k-1)
		p = p->next;
	te->next = p->next;
	p->next = te;
}

void shan(int k) {
	if (k<1 || k>num) {
		cout << "刪除位置不在成績表內\n";
		return;
	}
	ss* p = head,*te;
	int p1 = 0;
	while (p->next != nullptr && p1++ < k-1)
		p = p->next;
	te = p->next;
	p->next = te->next;
	delete te;
	num--;
}