first commit

职工工作量统计.c

@@ -0,0 +1,278 @@
+#include "stdio.h"
+#include "stdlib.h"
+#define FILENAME "worker.txt"
+#define N 20
+/*******************************************************
+定义
+*******************************************************/
+struct worker
+{
+	int number;       /*工号*/
+	int counts;       /*数量*/
+	int grade;        /*排名*/
+};
+/*******************************************************
+显示菜单
+*******************************************************/
+void xinxi()
+{
+	printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+	printf("+                 职工工作量统计系统                      +\n");
+	printf("+                                                         +\n");
+	printf("+                 1. 职工基本信息输入                     +\n");
+	printf("+                                                         +\n");
+	printf("+                 2. 工作量输入                           +\n");
+	printf("+                                                         +\n");
+	printf("+                 3. 按工作量排序                         +\n");
+	printf("+                                                         +\n");
+	printf("+                 4. 按职工工号进行信息删除               +\n");
+	printf("+                                                         +\n");
+	printf("+                 5. 结束程序                             +\n");
+	printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+}
+/*******************************************************
+信息显示到屏幕
+*******************************************************/
+int readFromFile(struct worker w[])
+{
+	FILE *fp = NULL;
+	int i = 0;
+	fp = fopen(FILENAME, "rb");  /*打开文件*/
+	if (fp != NULL)
+	{
+		while (!feof(fp))    /*从文件中读入学生*/
+		{
+			if (i >= N)
+				break;
+			if (fread(w + i, sizeof(struct worker), 1, fp) == 1)
+				i++;
+		}
+		fclose(fp);
+	}
+	return i;
+}
+/*******************************************************
+功能:输入职工基本信息
+*******************************************************/
+int f(struct worker w[], int length)
+{
+	FILE *fp;
+	if ((fp = fopen(FILENAME, "ab+")) == NULL)
+	{
+		exit(0);
+	}
+	int i = length;
+	while (i < N) {
+		printf("第%d个职工\n", i);
+		printf("\n");
+		printf("请你输入工号(以职工号为0结束):\n");/*输入工号*/
+		scanf("%d", &w[i].number);
+		if (w[i].number == 0)
+			break;
+		printf("\n");
+		printf("\n");
+		printf("请你输入数量:\n");/*输入数量*/
+		scanf("%d", &w[i].counts);
+		fwrite(&w[i], sizeof(struct worker), 1, fp);
+		printf("\n");
+		i++;
+	}
+	fclose(fp);
+	return i;
+}
+/*******************************************************
+功能:工作量输入并累加
+*******************************************************/
+void input(struct worker w[], int length)
+{
+
+	int i = 1;
+	int number, counts;
+	printf("请输入工号:");
+	scanf("%d", &number);
+	while (number != 0)
+	{
+		printf("请输入完成数量:\n");
+		scanf("%d", &counts);
+		for (i = 0; i < length; i++)
+			if (w[i].number == number)
+			{
+				w[i].counts += counts;
+				break;
+			}
+		if (i >= length)
+			printf("工号不存在:\n");
+		printf("请输入工号:");
+		scanf("%d", &number);
+	}
+	FILE *fp;
+	if((fp=fopen("worker.txt","wb"))==NULL)
+	{
+		printf("cannot open this file!\n");
+		exit(0);
+	}
+	for(i=0;i<length;i++)
+	fwrite(&w[i],sizeof(struct worker),1,fp);
+	fclose(fp);
+}
+////////////////////////////////////////////////////////////////////////////////
+/* 按工作量从大到小排序并标上名次 */////////////////////////////////////////////////////////////////////////////////
+void sortCounts(struct worker w[], int length)
+{
+	int i = 0, j = 0, k = 0;
+	struct worker s;
+	for (i = 0; i < length; i++)
+	{
+		k = i;
+		for (j = i + 1; j < length; j++)for (j = i + 1; j < length; j++)
+			if (w[j].counts > w[k].counts)
+				k = j;
+		/*  交换 w[i] and w[k] */
+		s = w[k];
+		w[k] = w[i];
+		w[i] = s;
+	}
+	if (length > 0)
+		w[0].grade = 1;
+	for (i = 1; i < length; i++)
+		if (w[i].counts == w[i - 1].counts)
+			w[i].grade = w[i - 1].grade;
+		else
+			w[i].grade = w[i - 1].grade + 1;
+}
+////////////////////////////////////////////////////////////////////////////////
+/* 输出名次、同一名次的职工人数及他们的工号，姓名*/
+///////////////////////////////////////////////////////////////////////////////
+void sortNumber(struct worker w[], int length)
+{
+	int i = 0;
+	int grade, count;
+	if (length > 0)
+	{
+		while (i < length)
+		{
+			count = 0;
+			grade = w[i].grade;
+			printf("名次:%d ", grade);
+			printf(" 工作量:%d ", w[i].counts);
+			printf("%s", "工号:");
+			while (i < length)
+			{
+				if (grade == w[i].grade)
+				{
+					printf("%d ", w[i].number);
+					count++;
+				}
+				else
+					break;
+				i++;
+			}
+			printf("人数:%d\n", count);
+		}
+	}
+	else
+		printf("职工数据不存在!\n");
+}
+/********************************************************
+按职工号删除职工信息
+********************************************************/
+int delet(struct worker w[], int length, int stuNum) 
+{
+	int i, j;
+	char choice;
+	for (i = 0; i < length; i++)
+	{
+		if (stuNum == w[i].number)
+		{
+			printf("欲删除职工号为：");
+			printf("%d\n", w[i].number);
+			break;
+		}
+	}
+	if (i < length)
+	{
+		printf("你确实要删除这个职工吗?(Y/N)");
+		scanf("%c", &choice);
+		if (choice == 'Y' || choice == 'y')
+		{
+			for (j = i; j < length; j++)
+				w[j] = w[j + 1];
+			length--;
+			printf("删除成功!\n");
+		}
+	}
+	else
+		printf("\n指定的职工不存在!\n");
+	FILE *fp;
+	if((fp=fopen("worker.txt","wb"))==NULL)
+	{
+		printf("cannot open this file!\n");
+		exit(0);
+	}
+	for(i=0;i<length;i++)
+	fwrite(&w[i],sizeof(struct worker),1,fp);
+	fclose(fp);
+	return length;
+}
+/********************************************************
+结构体数组中的职工信息输出到文件
+********************************************************/
+void writeToFile(struct worker w[], int length) 
+{
+	FILE *fp = NULL;
+	int i = 0;
+	fp = fopen(FILENAME, "ab");
+	if (fp == NULL)
+	{
+		printf("打开文件出错！\n");
+		exit(0);
+	}
+	for (i = 0; i < length; i++)
+		fwrite(w + i, sizeof(struct worker), 1, fp);
+	fclose(fp);
+}
+
+int main() 
+{
+	int choice;
+	struct worker w[N];
+	int NUM;
+	char stuName[100];
+	int stuNum;
+	int length = 0;
+	length = readFromFile(w);//读入
+	do
+	{
+		xinxi();
+		scanf("%d", &choice);
+		switch (choice)
+		{
+		case 1:
+			length = f(w, length);
+			break;
+
+		case 2:
+			input(w, length);
+			break;
+
+		case 3:
+			sortCounts(w, length);
+			sortNumber(w, length);
+			break;
+		case 4:
+			printf("请输入欲删除的职工号");
+			scanf("%d", &stuNum);
+			length = delet(w, length, stuNum);
+			break;
+		case 5:
+		{
+			writeToFile(w, length);//保存
+			printf("程序使用以结束\n");
+			exit(0);
+		}
+		default:
+		{printf("输入有错误请重新输入:\n");
+		}
+		}
+	} while (1);
+}