怎么用C语言实现职工工资管理系统

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设计要求：

模拟并设计一个企业的职工工资管理系统，职工信息包括工号、姓名、基本工资、津贴，设职工人数不超过500人，以菜单选项的方式完成相应的功能，主要功能需求如下：

建立工资表；

职工扣税和实发工资；

按实发工资从高到低的顺序显示工资明细表；

修改职工的工资信息；

按工号查询职工工资信息；

职工工资统计分析；

退出系统。

基本思路：

将职工工资管理系统的职工信息录入功能、数据处理并存入文件功能、按照职工工号查找职工工资信息功能、修改职工信息功能分成多个模块，为了使程序的可读性更强，程序的编写将以函数形式编写封装各个功能，然后在主函数中以循环形式读取用户输入的指令，根据用户的指令选择不同的函数入口地址，从而执行不同的操作，实现设计要求的职工工资管理系统的各项功能。

全部代码：

#include <stdio.h> #include <stdlib.h>#include <math.h>#include <windows.h>#define Q 15               //最大字符串长度 #define N 500              //最大员工数量 typedef struct workers{    int workersID;            //职工工号    char name[Q];             //职工姓名    double basicsalary;       //基本工资    double allowance;         //津贴    double taxsalary;         //扣税    double truesalary;        //实发工资}WORKERS;                     //职工信息void Menu(int *n);                               //主菜单 void Payroll(WORKERS work[],int *p);             //建立工资表 void Taxsalary(WORKERS work[],int num);          //计算职工扣税和实发工资void Sort(WORKERS work[],int num ) ;             //将工资从高到低排序void Change(WORKERS work[],int num);             //修改职工的工资信息int Find(WORKERS work[],int num);                //按工号查询职工工资信息void Analyse(WORKERS work[],int num);            //职工工资统计分析 void Printworkroll(WORKERS work[],int num);      //显示工资明细表void Writefile(WORKERS work[],int num);          //输出数据并写入 data.txt 文件     int main(){       WORKERS work[N];                             //定义一个结构体数组来存储员工信息     char ch;                                     //ch为检测是否返回主菜单     int n,num=0,ret;                             //n为操作数,num为总人数,ret判断数     while(1){        system("cls");        Menu(&n);                                //主菜单                 switch(n){            case 0:                system("cls");                   //退出程序                 printf("退出成功！\n");                exit(0);            case 1:                Payroll(work,&num);              //建立工资表                break;            case 2:                Taxsalary(work,num);             //职工扣税和实发工资                Writefile(work,num);             //输出数据并写入 data.txt 文件                 printf("计算完成，并输出数据至txt文件！\n");                Sleep(2000);                system("cls");                break;            case 3:                Sort(work,num);                  //将工资从高到低排序                Printworkroll(work,num);         //显示工资明细表                printf("\n是否返回主菜单？Y or N\n");                fflush(stdin);                ch=getchar();                if(ch=='N'){                    exit(0);                }                break;            case 4:                Change(work,num);                //修改职工的工资信息                printf("\n是否返回主菜单？Y or N\n");                fflush(stdin);                ch=getchar();                if(ch=='N'){                    exit(0);                }                break;            case 5:                ret=Find(work,num);              //按工号查询职工工资信息                if(ret==0){                    printf("查无此人！");        //反馈查询不到信息                 }                printf("\n是否返回主菜单？Y or N\n");                fflush(stdin);                ch=getchar();                if(ch=='N'){                    exit(0);                }                break;            case 6:                Analyse(work,num);               //职工工资统计分析                printf("\n是否返回主菜单？Y or N\n");                fflush(stdin);                ch=getchar();                if(ch=='N'){                    exit(0);                }                break;        }    }    return 0;}void Menu(int *n)                                 //主菜单   *n为返回操作数 {    int a;    printf(" ——————职工工资管理系统——————\n");    printf("|       1.建立职工工资表                 |\n");    printf("|       2.职工扣税和实发工资             |\n");    printf("|       3.实发工资从高到低排序           |\n");    printf("|       4.修改职工工资信息               |\n");    printf("|       5.查询职工工资信息               |\n");    printf("|       6.职工工资统计分析               |\n");    printf("|       0.退出系统                       |\n");    printf(" ————————————————————\n");    printf("提示：请输入数字序号选择对应的操作！\n");    scanf("%d",&a);    *n=a;    system("cls");}void Payroll(WORKERS work[],int *p)               //建立工资表 {    int num=*p;    char ch;    do{        system("cls");        printf("员工（%d）的信息\n",num+1);        printf("工号:");        scanf("%d",&work[num].workersID);        printf("姓名:");        scanf("%s",&work[num].name);        printf("基本工资:");        scanf("%lf",&work[num].basicsalary);        printf("津贴:");        scanf("%lf",&work[num].allowance);        printf("是否继续录入？Y or N\n");         fflush(stdin);        scanf("%c",&ch);        num++;    }while(ch=='Y');        *p=num;      //返回总人数     system("cls");}void Taxsalary(WORKERS work[],int num)            //职工扣税和实发工资{        int i;    double money;    for(i=0;i<num;i++)    {        money=work[i].basicsalary+work[i].allowance;        if( money<3000)        {              work[i].taxsalary=0;             work[i].truesalary= money-work[i].taxsalary;           }        else if((money<4000)&&(money>=3000))        {            work[i].taxsalary=(money-3000)*0.05;            work[i].truesalary= money-work[i].taxsalary;         }        else        {             work[i].taxsalary=(money-3000)*0.05+(money-4000)*0.1;            work[i].truesalary= money-work[i].taxsalary;         }     }}void Sort(WORKERS work[],int num)                 //将工资从高到低排序{    int i,j;    WORKERS temp;    for (i=0;i<num-1;i++)    {        for(j=i+1;j<num;j++)            {            if (work[i].truesalary<work[j].truesalary)            {                temp=work[j];                work[j]=work[i];                work[i]=temp;            }         }        }} void Change(WORKERS work[],int num)               //修改职工的工资信息{    int n,sum;    char ch;    printf("修改职工的工资信息\n\n");    printf("请输入你的工号：");    scanf("%d",&n);    putchar('\n');    for(int i=0;i<num;i++){        if(work[i].workersID==n){            printf("工号:%-10d\n",work[i].workersID);            printf("姓名:%s\n",work[i].name);             printf("基本工资:%6.2lf\n",work[i].basicsalary);             printf("津贴:%6.2lf\n",work[i].allowance);             printf("扣税:%6.2lf\n",work[i].taxsalary);             printf("实发工资:%6.2lf\n",work[i].truesalary);             printf("\n是否需要修改信息？Y or N\n");            fflush(stdin);            scanf("%c",&ch);            if(ch=='Y'){                printf("\n基本工资:");                scanf("%lf",&work[i].basicsalary);                printf("津贴:");                scanf("%lf",&work[i].allowance);                sum=work[i].basicsalary+work[i].allowance;                if(sum<=3000){                      work[i].taxsalary=0;                    work[i].truesalary=sum;                }                else if((sum<=4000)&&(sum>3000)){                    work[i].taxsalary=(sum-3000)*0.05;                    work[i].truesalary=3000+((sum-3000)*0.95);                }                   else{                    work[i].taxsalary=50+(sum-4000)*0.10;                    work[i].truesalary=3950+((sum-4000)*0.9);                }                system("cls");                                printf("员工信息修改成功！\n\n");                printf("扣税:%6.2lf\n",work[i].taxsalary);                 printf("实发工资:%6.2lf\n",work[i].truesalary);                                 break;                }            else{                break;            }            }    }} int Find(WORKERS work[],int num)                  //按工号查询职工工资信息{    int s,i,flag=0;    printf("查询职工工资信息\n\n");    printf("请输入您的工号：");    scanf("%d",&s);    putchar('\n');    for(i=0;i<num;i++)    {        if(work[i].workersID==s)                 //查询输入的工号并调用信息；         {            flag=1;             printf("工号:%d\n",work[i].workersID);            printf("姓名:%s\n",work[i].name);             printf("基本工资:%.2lf\n",work[i].basicsalary);             printf("津贴:%.2lf\n",work[i].allowance);             printf("扣税:%.2lf\n",work[i].taxsalary);             printf("实发工资:%.2lf\n",work[i].truesalary);             break;        }    }    return flag;}void Analyse(WORKERS work[],int num)              //职工工资统计分析{    int i,s=0,m=0,l=0;      //s表示工资小于3000的人数；m表示工资在3000到4000的人数；l表示工资大于4000的人数。     double x,y,z;    for(i=0;i<num;i++)    {        if(work[i].truesalary<3000)            {            s++;        }            else if((work[i].truesalary<=4000)&&(work[i].truesalary>=3000))        {            m++;        }                else        {            l++;        }    }    x=(double)s/num*100;    y=(double)m/num*100;    z=(double)l/num*100;    printf("实发工资\n");    printf("（3000元以下）        人数:%d\t比例:%.2lf%%\n",s,x);                  printf("（3000以上4000以下）  人数:%d\t比例:%.2lf%%\n",m,y);         printf("（4000以上）          人数:%d\t比例:%.2lf%%\n",l,z);         }void Printworkroll(WORKERS work[],int num)        //显示工资明细表{    printf("工号\t姓名\t基本工资\t津贴\t扣税\t实发工资\n");    for(int i=0;i<num;i++){        printf("%d\t",work[i].workersID);        printf("%s\t",work[i].name);         printf("   %.2lf\t",work[i].basicsalary);         printf("%.2lf\t",work[i].allowance);         printf("%.2lf\t",work[i].taxsalary);         printf("%.2lf\n",work[i].truesalary);     }}void Writefile(WORKERS work[],int num)            //输出数据并写入 data.txt 文件{     WORKERS temp;    for(int i=0;i<num-1;i++)    {        for(int j=i+1;j<num;j++)        {            if(work[i].workersID>work[j].workersID)            {                temp=work[i];                work[i]=work[j];                work[j]=temp;            }        }    }        FILE *fp;    if((fp=fopen("data.txt","w"))==0){        printf("错误！\n");        exit(0);    }    fprintf(fp,"职工工资管理系统\n成功录入%d人\n详表如下：\n\n",num);    fprintf(fp,"工号\t姓名\t基本工资\t津贴\t扣税\t实发工资\n");    for(int i=0;i<num;i++){        fprintf(fp,"%-10d\t",work[i].workersID);        fprintf(fp,"%s\t",work[i].name);         fprintf(fp,"%.2lf\t",work[i].basicsalary);         fprintf(fp,"%.2lf\t",work[i].allowance);         fprintf(fp,"%.2lf\t",work[i].taxsalary);         fprintf(fp,"%.2lf\n",work[i].truesalary);     }    fclose(fp);}

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