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c语言随机点名器(源码)
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突发奇想写了个随机点名器…以供使用 随机点名器
main函数 #include "myList.h" #define FILENAME "stu.txt" void menu();//画面界面; void userOptions(Node* headNode);//用户选项 int main(void) { SetConsoleTitle(L"随机抽查系统"); Node* List = createrList(); readInfoFromFile(List, FILENAME); while (true) { menu(); userOptions(List); system("pause"); system("cls"); } system("pause"); return 0; } void menu() { printf("\t\t\t学生点名系统\n"); printf("\t\t1)开始随机抽查" "\t\t2)添加学生\n" "\t\t3)删除学生" "\t\t4)修改学生信息\n" "\t\tq)退出\n"); printf("请输入你的选项:"); } void userOptions(Node* List) { Student info; char choose = '0'; choose = enter(); switch (choose) { case '1': printf("\t\t\t*开始随机抽查*\n"); seekNode(List, rollCall(LengthNode(List))); break; case '2': printf("\t\t\t\t\t\t已有学生如下\n"); printfNode(List); printf("\t\t\t*添加学生*\n"); printf("注意请从%d之后开始也就是%d\n", LengthNode(List),LengthNode(List)+1); printf("\t\t请输入学生序号:"); scanf_s("%d",&info.num); printf("\t\t请输入学生学号:"); scanf_s("%ld", &info.number); printf("\t\t请输入学生姓名:"); scanf_s("%s", info.name, sizeof(info.name)); insetNodeByHead(List, info); break; case '3': printf("\t\t\t\t\t\t已有学生如下\n"); printfNode(List); printf("\t\t\t*删除学生*\n"); printf("\t\t请输入学生学号(后两位即可):"); scanf_s("%ld", &info.number); deleteNodeAppoinNumber(List, info.number); break; case'4': printf("已有学生如下\n"); printfNode(List); printf("\t\t\t*修改学生信息*\n"); printf("\t\t请输入学生学号:"); scanf_s("%ld", &info.number); upDataNode(List, info.number); break; case'q': printf("\t\tquit!\n"); exit(0); break; default: break; } weiteInfoToFile(List, FILENAME); }enter.h (这个就是我自己写来玩的,读取输入的字符,你们也可以自己弄一个,就可以不用我这个了 但是要记得修改一下引用这个的代码喔) #pragma once //防止重复引用 #include "myList.h" //处理写入 char enter(void); //函数声明 char enter(void) { short count = 1;//次数 char input = getchar(); // 读取单个字符 fflush(stdin);//清空输入缓存区,防止读取后,又读取 for (int i = 1; i next = NULL; } return headNode; } //创建结点 Node* createrNode(Student data) { Node* newNode = (Node*)malloc(sizeof(Node)); if (newNode) { newNode->data = data; newNode->next = NULL; } return newNode; } //插入结点 void insetNodeByHead(Node* headNode, Student data) { Node* newNode = createrNode(data); newNode->next = headNode->next; headNode->next = newNode; } //删除结点 void deleteNodeAppoinNumber(Node* headNode, long int number) { Node* posNode = headNode->next; Node* posFrontNode = headNode; if (posNode == NULL) { printf("\t\t表中没有学生\n"); } else { while (posNode->data.number != number) {//没有找到就继续找 posFrontNode = posNode; posNode = posNode->next; if (posNode == NULL) {//找完最后一个了还没有 printf("\t\t表中没有该学生\n"); return; } } //找到了,执行删除操作 posFrontNode->next = posNode->next; free(posNode); printf("\t\t删除完成!"); } } //修改结点 void upDataNode(Node* headNode, long int number) { Node* posNode = headNode->next; Node* posFrontNode = headNode; char choose = '0'; if (posNode == NULL) { printf("\t\t该表中没有学生\t"); } else { while (posNode->data.number != number) { posFrontNode = posNode; posNode = posNode->next; if (posNode == NULL) { printf("\t\t表中没有该学生\n"); return; } } while (true) { printf("\t\t请选择要修改的选项:1)姓名 2)学号 q)退出!\n"); printf("\t\t请输入:"); choose = enter(); switch (choose) { case '1': printf("\t\t请输入你要更改的名字(原姓名是%s):", posNode->data.name); scanf_s("%s", posNode->data.name, sizeof(posNode->data.name)); system("pause"); break; case '2': printf("\t\t请输入你要更改的学号(原学号是%ld):", posNode->data.number); scanf_s("%ld", &posNode->data.number); system("pause"); break; case 'q': printf("\t\tquit!"); return; default: printf("请输入正确选项:"); break; } } } } //打印结点 void printfNode(Node* headNode) { Node* pMove = headNode->next; printf("\t\t\t\t\t\t\t\t学号\t\t姓名\n"); while (pMove != NULL) { printf("\t\t\t\t\t\t\t\t%ld\t%s\n", pMove->data.number, pMove->data.name); pMove = pMove->next; } printf("\n"); } //文件读 bool readInfoFromFile(Node* headNode, char* fileName) { Student data; boolean one = false; FILE* fp; fopen_s(&fp, fileName, "r"); if (fp == NULL) { fopen_s(&fp, fileName, "w+"); } if (fp == NULL) { return EOF; } while (fscanf_s(fp, "%d\t%ld\t%s" , &data.num,&data.number, data.name, sizeof(data.name)) != EOF) { insetNodeByHead(headNode, data); } if (fp == NULL) { return EOF; } fclose(fp); return 0; } //文件写 bool weiteInfoToFile(Node* headNode, char* fileName) { FILE* fp; fopen_s(&fp, fileName, "w"); Node* pMove = headNode->next; if (fp == NULL) { return EOF; } while (pMove) { fprintf_s(fp, "%d\t\t%ld\t\t%s\n", pMove->data.num,pMove->data.number,pMove->data.name); pMove = pMove->next; } if (fp == NULL) { return EOF; } fclose(fp); return 0; } //求出链表长度然后返回 int LengthNode(struct Node* headNode) { int length = 0; struct Node* pMove = headNode->next; while (pMove) { length++; pMove = pMove->next; } return length; } //读取随机数然后选出该学生 void seekNode(Node* headNode, long int rand_1) { Node* posNode = headNode->next; Node* posFrontNode = headNode; if (posNode == NULL) { printf("\t\t该表中没有学生\t"); } else { //这里的number改为num while (posNode->data.num != rand_1) { posFrontNode = posNode; posNode = posNode->next; if (posNode == NULL) { printf("\t\t该表中没有这这个学号(%ld)的学生\n", rand_1); return; } } printf("就决定是你了->"); printf("\t\t%ld\t%s\n\n\n\n\n", posNode->data.number, posNode->data.name); } } //产生随机数 long int rollCall(long int length) { long int number; srand((unsigned)time(NULL)); number = rand() % length + 1;//33+40;//length+1 return number; } Done!有问题就评论,提出喔,感谢改正!!! 要坚持哦! |
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