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56dfb991ae
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54ff949ca5
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#include "stdio.h"
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#include "stdlib.h"
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#define FILENAME "worker.txt"
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#define N 20
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/*******************************************************
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定义
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*******************************************************/
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struct worker
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{
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int number; /*工号*/
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int counts; /*数量*/
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int grade; /*排名*/
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};
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/*******************************************************
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显示菜单
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*******************************************************/
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void xinxi()
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{
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printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
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printf("+ 职工工作量统计系统 +\n");
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printf("+ +\n");
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printf("+ 1. 职工基本信息输入 +\n");
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printf("+ +\n");
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printf("+ 2. 工作量输入 +\n");
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printf("+ +\n");
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printf("+ 3. 按工作量排序 +\n");
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printf("+ +\n");
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printf("+ 4. 按职工工号进行信息删除 +\n");
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printf("+ +\n");
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printf("+ 5. 结束程序 +\n");
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printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
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}
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/*******************************************************
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信息显示到屏幕
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*******************************************************/
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int readFromFile(struct worker w[])
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{
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FILE *fp = NULL;
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int i = 0;
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fp = fopen(FILENAME, "rb"); /*打开文件*/
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if (fp != NULL)
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{
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while (!feof(fp)) /*从文件中读入学生*/
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{
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if (i >= N)
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break;
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if (fread(w + i, sizeof(struct worker), 1, fp) == 1)
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i++;
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}
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fclose(fp);
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}
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return i;
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}
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/*******************************************************
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功能:输入职工基本信息
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*******************************************************/
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int f(struct worker w[], int length)
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{
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FILE *fp;
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if ((fp = fopen(FILENAME, "ab+")) == NULL)
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{
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exit(0);
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}
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int i = length;
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while (i < N) {
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printf("第%d个职工\n", i);
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printf("\n");
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printf("请你输入工号(以职工号为0结束):\n");/*输入工号*/
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scanf("%d", &w[i].number);
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if (w[i].number == 0)
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break;
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printf("\n");
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printf("\n");
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printf("请你输入数量:\n");/*输入数量*/
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scanf("%d", &w[i].counts);
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fwrite(&w[i], sizeof(struct worker), 1, fp);
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printf("\n");
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i++;
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}
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fclose(fp);
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return i;
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}
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/*******************************************************
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功能:工作量输入并累加
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*******************************************************/
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void input(struct worker w[], int length)
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{
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int i = 1;
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int number, counts;
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printf("请输入工号:");
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scanf("%d", &number);
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while (number != 0)
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{
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printf("请输入完成数量:\n");
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scanf("%d", &counts);
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for (i = 0; i < length; i++)
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if (w[i].number == number)
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{
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w[i].counts += counts;
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break;
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}
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if (i >= length)
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printf("工号不存在:\n");
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printf("请输入工号:");
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scanf("%d", &number);
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}
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FILE *fp;
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if((fp=fopen("worker.txt","wb"))==NULL)
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{
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printf("cannot open this file!\n");
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exit(0);
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}
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for(i=0;i<length;i++)
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fwrite(&w[i],sizeof(struct worker),1,fp);
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fclose(fp);
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}
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////////////////////////////////////////////////////////////////////////////////
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/* 按工作量从大到小排序并标上名次 */////////////////////////////////////////////////////////////////////////////////
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void sortCounts(struct worker w[], int length)
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{
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int i = 0, j = 0, k = 0;
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struct worker s;
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for (i = 0; i < length; i++)
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{
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k = i;
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for (j = i + 1; j < length; j++)for (j = i + 1; j < length; j++)
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if (w[j].counts > w[k].counts)
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k = j;
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/* 交换 w[i] and w[k] */
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s = w[k];
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w[k] = w[i];
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w[i] = s;
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}
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if (length > 0)
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w[0].grade = 1;
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for (i = 1; i < length; i++)
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if (w[i].counts == w[i - 1].counts)
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w[i].grade = w[i - 1].grade;
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else
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w[i].grade = w[i - 1].grade + 1;
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}
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////////////////////////////////////////////////////////////////////////////////
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/* 输出名次、同一名次的职工人数及他们的工号，姓名*/
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///////////////////////////////////////////////////////////////////////////////
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void sortNumber(struct worker w[], int length)
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{
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int i = 0;
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int grade, count;
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if (length > 0)
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{
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while (i < length)
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{
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count = 0;
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grade = w[i].grade;
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printf("名次:%d ", grade);
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printf(" 工作量:%d ", w[i].counts);
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printf("%s", "工号:");
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while (i < length)
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{
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if (grade == w[i].grade)
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{
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printf("%d ", w[i].number);
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count++;
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}
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else
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break;
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i++;
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}
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printf("人数:%d\n", count);
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}
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}
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else
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printf("职工数据不存在!\n");
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}
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/********************************************************
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按职工号删除职工信息
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********************************************************/
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int delet(struct worker w[], int length, int stuNum)
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{
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int i, j;
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char choice;
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for (i = 0; i < length; i++)
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{
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if (stuNum == w[i].number)
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{
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printf("欲删除职工号为：");
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printf("%d\n", w[i].number);
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break;
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}
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}
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if (i < length)
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{
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printf("你确实要删除这个职工吗?(Y/N)");
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scanf("%c", &choice);
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if (choice == 'Y' || choice == 'y')
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{
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for (j = i; j < length; j++)
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w[j] = w[j + 1];
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length--;
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printf("删除成功!\n");
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}
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}
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else
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printf("\n指定的职工不存在!\n");
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FILE *fp;
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if((fp=fopen("worker.txt","wb"))==NULL)
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{
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printf("cannot open this file!\n");
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exit(0);
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}
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for(i=0;i<length;i++)
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fwrite(&w[i],sizeof(struct worker),1,fp);
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fclose(fp);
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return length;
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}
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/********************************************************
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结构体数组中的职工信息输出到文件
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********************************************************/
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void writeToFile(struct worker w[], int length)
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{
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FILE *fp = NULL;
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int i = 0;
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fp = fopen(FILENAME, "ab");
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if (fp == NULL)
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{
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printf("打开文件出错！\n");
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exit(0);
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}
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for (i = 0; i < length; i++)
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fwrite(w + i, sizeof(struct worker), 1, fp);
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fclose(fp);
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}
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int main()
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{
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int choice;
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struct worker w[N];
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int NUM;
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char stuName[100];
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int stuNum;
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int length = 0;
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length = readFromFile(w);//读入
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do
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{
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xinxi();
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scanf("%d", &choice);
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switch (choice)
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{
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case 1:
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length = f(w, length);
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break;
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case 2:
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input(w, length);
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break;
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case 3:
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sortCounts(w, length);
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sortNumber(w, length);
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break;
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case 4:
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printf("请输入欲删除的职工号");
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scanf("%d", &stuNum);
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length = delet(w, length, stuNum);
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break;
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case 5:
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{
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writeToFile(w, length);//保存
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printf("程序使用以结束\n");
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exit(0);
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}
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default:
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{printf("输入有错误请重新输入:\n");
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}
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}
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} while (1);
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}
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