tang/main.cpp

#include<stdio.h>
#include<stdlib.h>  /*其它说明*/
#include<string.h>  /*字符串函数*/
#include<Windows.h>
#define max 100
#define LEN 15      
#define N 50        
int k = 1, n = 0, m = 0;

typedef struct student {
	char no[13];//卡号
	char name[10];//姓名
	char sex[8];//性别
	int balance;//余额
	char passwd[20];
} student, stu[max];
void fileWrite(int n, stu s);
void modify() {
	int j = 0;
	FILE * fp;
	if ((fp = fopen("a.txt", "r")) == NULL) return;
	stu s;
	while (fscanf(fp, "%s %s %s %s %d ", &s[j].no, &s[j].name, &s[j].sex[j],&s[j].passwd, &s[j].balance) == 5) {
		j++;
	}
	n = j;
	int i, item, num;
	int age;
	char sex1[8], s1[LEN + 1], s2[LEN + 1],passwd1[20],age1[10]; 
	float score1;
	printf("请输入要修改的用户的卡号:\n");
	scanf("%s", s1);
	for (i = 0; i<n; i++) {
		if (strcmp(s[i].no, s1) == 0) { /*比较字符串是否相等*/
			num = i;
			printf("------------------\n");
			printf("1.修改姓名\n");
			printf("2.修改性别\n");
			printf("3.修改密码\n");
			printf("4.退出本菜单\n");
			printf("------------------\n");
			while (1) {
				printf("请选择子菜单编号:");
				scanf("%d", &item);
				switch (item) {
				case 1:
					printf("请输入新的姓名:\n");
					scanf("%s", s2);
					strcpy(s[num].name, s2);
					fileWrite(n, s);
					break;
				case 2:
					printf("请输入新的性别:\n");
					scanf("%s", &sex1);
					strcpy(s[num].sex, sex1);
					fileWrite(n, s);
					break;
				case 3:
					printf("请输入新的密码:\n");
					scanf("%s", &passwd1);
					strcpy(s[num].passwd, passwd1);
					fileWrite(n, s);
					break;
				case 4:
					return;
				default:
					printf("请在1-4之间选择\n");
				}
			}
		}
		else {
			printf("没有该卡号!!!\n");
		}
	}
	system("pause");
}
void insert() {
	int i, a, b;
	printf("请输入待增加的用户数:\n");
	scanf("%d", &n);
	FILE * fp;
	if ((fp = fopen("a.txt", "at")) == NULL) return;
	stu s;
	for (i = 0; i<n; i++) {
		printf("\n请输入第%d个用户的卡号：", i + 1);
		scanf("\n%s", &s[i].no);
		printf("\n请输入第%d个用户的姓名：", i + 1);
		scanf("%s", &s[i].name);
		printf("\n请输入第%d 个用户的性别：", i + 1);
		scanf("%s", &s[i].sex);
		printf("\n请输入第%d 个用户的密码：", i + 1);
		scanf("%s", &s[i].passwd);
		//写入文件
		fprintf(fp, "%s %s %s %s %d \n", s[i].no, s[i].name, s[i].sex,s[i].passwd, s[i].balance = 0);
	}
	printf("添加成功!!!\n");
	fclose(fp);
	system("pause");
}
void del() {
	int j = 0;
	FILE * fp, *fp1;
	if ((fp = fopen("a.txt", "r")) == NULL) return;
	stu s;
	while (fscanf(fp, "%s %s %s %s %d ", &s[j].no, &s[j].name, &s[j].sex[j],&s[j].passwd, &s[j].balance) == 5) {
		j++;
	}
	n = j;

	int i, flag = 0;
	char s1[LEN + 1];
	printf("请输入要删除用户的卡号:\n");
	scanf("%s", s1);
	for (i = 0; i<n; i++) {
		if (strcmp(s[i].no, s1) == 0) {
			flag = 1;
			for (j = i; j<n - 1; j++) {
				strcpy(s[j].no, s[j + 1].no);
				strcpy(s[j].name, s[j + 1].name);
				s[j].balance = s[j + 1].balance;
				strcpy(s[j].sex, s[j + 1].sex);
				strcpy(s[j].passwd, s[j + 1].passwd);
			}
		}
	}
	if (flag == 0)
		printf("该卡号不存在！\n");
	if (flag == 1) {
		n--;
		fileWrite(n, s);
		fclose(fp);
		printf("删除成功,显示结果请选择菜单\n");

	}
	system("pause");
}
void seek() {
	int j = 0,flag=0;
	FILE * fp;
	if ((fp = fopen("a.txt", "r")) == NULL) return;
	stu s;
	while (fscanf(fp, "%s %s %s %s %d", &s[j].no, &s[j].name, &s[j].sex[j], &s[j].passwd, &s[j].balance) == 5) {
		j++;
	}
	n = j;
	int i = 0, item;
	char s1[13], s2[20];
	lable1:
	printf("请输入卡号：\n");
	scanf("%s", &s1);
	for (i = 0; i < n; i++) {
		if (strcmp(s[i].no, s1) == 0) {
			printf("请输入密码：\n");
			scanf("%s", &s2);
			if (strcmp(s[i].passwd, s2) == 0) {
				printf("您查询的账户信息如下\n");
				printf("卡号：%s\n", s[i].no);
				printf("姓名：%s\n", s[i].name);
				printf("性别：%s\n", s[i].sex);
				printf("余额：%d\n", s[i].balance);
				flag = 2;
				break;
			}
			else {
				printf("您输入的密码错误，请重新输入\n");
				goto lable1;
			}
		}
	}
	if (flag != 2) {
		printf("您输入的用户名不存在，请重新输入\n");
		goto lable1;
	}
	fclose(fp);

	system("pause");
}
	void fileWrite(int n, stu s) {
	FILE *fp1;
	int i;
	if ((fp1 = fopen("a.txt", "w")) == NULL) return;
	for (i = 0; i<n; i++) {
		fprintf(fp1, "%s %s %s %s %d  ", s[i].no, s[i].name, s[i].sex,s[i].passwd, s[i].balance);
	}
	fclose(fp1);
	printf("保存成功!!!\n");
}
/* 界面*/
void menu() {
	int num;
	printf("------------------------------------------------------\n");
	printf("------------------------------------------------------\n");
	printf("-------------------银行管理系统-----------------------\n");
	printf("------------------------------------------------------\n");
	printf("------------------------------------------------------\n");
	Sleep(3000);
	system("CLS");
	printf("------------------------------------------------------\n");
	printf("----------------------请选择功能----------------------\n");
	printf("-------------------1.查询   2.存款--------------------\n");
	printf("-------------------3.取款   4.开户--------------------\n");
	printf("-------------------5.销户   6.账户信息修改------------\n");
	printf("-----------------------0.退出-------------------------\n");
	printf("请选择菜单编号:");
	scanf("%d", &num);
	switch (num) {
	case 0:
		exit(0);
		break;
	case 1:
		seek();
		break;
	case 2:
		break;
	case 3:
		break;
	case 4:
		insert();
		break;
	case 5:
		del();
		break;
	case 6:
		modify();
		break;
	default:
		printf("请在0-6之间选择\n");
	}
}


int main() {
	while (k) {
		system("cls");
		menu();
	}
	system("pause");
	return 0;
}