#include<stdio.h>#include<stdlib.h>#include<conio.h>#include<string.h>#define LEN sizeof(struct financial)#define FFORMAT "%-8d%-15s%-10d%-10d%-12.2f%-12.2f%-12.2f\n"#define DATA member[i].num,member[i].name,member[i].month,member[i].year,member[i].income,member[i ].output,member[i].totalstruct financial //定义家庭成员信息{int num; //编号char name[15]; //家庭成员姓名int month; //月份int year; //年份float income; //收入float output; //支出float total; //总金额};struct financial member[50]; //定义结构体数组void menu(); //主界面void in(); //录入家庭成员收支信息void show(); //显示家庭成员收支信息void del(); //删除家庭成员收支信息void modify(); //修改家庭成员收支信息void total(); //计算家庭成员总收入void search(); //查找家庭成员收支信息int main(){int n;menu();scanf("%d",&n); //输入数字选择功能while(n){switch(n){case 1:in(); //调用录入家庭成员信息函数break;case 2:search(); //查找家庭成员信息函数break;case 3:del(); //调用删除家庭成员信息函数break;case 4:modify(); //调用修改家庭成员信息函数break;case 5:total(); //调用汇总函数break;default:break;}printf("按任意键返回主菜单:\n");getch();menu(); //执行完功能再次显示菜单界面scanf("%d",&n);}return 0;}void menu(){system("cls");printf("|-------------------------------------------------|\n");printf("|--------------------家庭财务信息系统-------------|\n");printf("| 0. 退出|\n");printf("| 1. 录入信息|\n");printf("| 2. 查找信息|\n");printf("| 3. 删除信息|\n");printf("| 4. 修改信息|\n");printf("| 5. 统计信息|\n");printf("|-------------------------------------------------|\n");printf("选择(0-5):");}void in() //录入家庭成员信息{int i,m=0;char ch[2];FILE *fp;if((fp=fopen("家庭财务管理系统","ab+"))==NULL){printf("不能打开文件!\n");return;}while(!feof(fp)){if(fread(&member[m] ,LEN,1,fp)==1)m++; //统计当前记录条数fclose(fp);if(m==0)printf("没有找到!\n");else{//system("cls");show(); //调用show函数，显示原有信息}if((fp=fopen("家庭财务管理系统","wb"))==NULL){printf("不能打开文件!\n");return;}for(i=0;i<m;i++)fwrite(&member[i] ,LEN,1,fp); //向指定的磁盘文件写入信息printf("是否输入?(y/n):");scanf("%s",ch);while(strcmp(ch,"Y")==0||strcmp(ch,"y")==0) //判断是否要录入新信息{printf("编号:");scanf("%d",&member[m].num); //输入家庭成员编号for(i=0;i<m;i++)if(member[i].num == member[m].num){printf("该记录已经存在，按任意键继续!");getch();fclose(fp);return;}printf("家庭成员姓名:");scanf("%s",member[m].name); //输入家庭成员姓名printf("请输入月份:");scanf("%d",&member[m].month); //输入月份printf("请输入年份:");scanf("%d",&member[m].year); //输入年份printf("请输入收入:");scanf("%f",&member[m].income); //输入收入printf("请输入支出:");scanf("%f",&member[m].output); //输入支出member[m].total=member[m].income - member[m].output;if(fwrite(&member[m],LEN,1,fp)!=1) //将新录入的信息写入指定的磁盘文件{printf("不能保存!");getch();}else{printf("%s 已经保存!\n",member[m].name);m++;}printf("是否继续?(y/n):");scanf("%s",ch);}fclose(fp);printf("OK!\n");}void show(){FILE *fp;int i,m=0;fp=fopen("家庭财务管理系统","ab+");while(!feof(fp)){if(fread(&member[m] ,LEN,1,fp)==1)m++;}fclose(fp);printf("编号成员月份年分收入支出总金额\t\n");for(i=0;i<m;i++){printf(FFORMAT,DATA);}}void del(){FILE *fp;int snum,i,j,m=0;char ch[2];if((fp=fopen("家庭财务管理系统","ab+"))==NULL)printf("不能打开文件\n");return;}while(!feof(fp))if(fread(&member[m],LEN,1,fp)==1)m++;fclose(fp);if(m==0){printf("没有记录!\n");return;}printf("请输入编号:");scanf("%d",&snum);for(i=0;i<m;i++)if(snum==member[i].num)break;if(i==m){printf("没有找到!");return;}printf("已经找到该记录，是否删除?(y/n)");scanf("%s",ch);if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0) //判断是否要进行删除{for(j=i;j<m;j++)member[j] = member[j+1]; //将后一个记录移到前一个记录的位置m--; //记录的总个数减1printf("成功删除!\n");}if((fp=fopen("家庭财务管理系统","wb"))==NULL){printf("不能打开!\n");return;}for(j=0;j<m;j++) //将更改后的记录重新写入指定的磁盘文件中if(fwrite(&member[j] ,LEN,1,fp)!=1){printf("不能保存!\n");getch();}fclose(fp);}void search(){FILE *fp;int snum,i,m=0;char ch[2];if((fp=fopen("家庭财务管理系统","ab+"))==NULL){printf("不能打开文件\n");return;}while(!feof(fp))if(fread(&member[m],LEN,1,fp)==1)m++;fclose(fp);if(m==0){printf("没有记录!\n");return;}printf("请输入编号:");scanf("%d",&snum);for(i=0;i<m;i++)if(snum == member[i].num){printf("已经找到该记录，是否显示?(y/n)");scanf("%s",ch);if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0){printf("编号成员月份年份收入支出总金额\t\n");printf(FFORMAT,DATA);break;}elsereturn;}if(i==m)printf("没有找到相应的记录!\n");void modify(){FILE *fp;int i,j,m=0,snum;char ch[2];if((fp=fopen("家庭财务管理系统","ab+"))==NULL){printf("不能打开文件!\n");return;}while(!feof(fp))if(fread(&member[m],LEN,1,fp)==1)m++;if(m==0){printf("没有记录!\n");fclose(fp);return;}printf("请输入要修改的记录信息的编号!\n");scanf("%d",&snum);for(i=0;i<m;i++)if(snum==member[i].num) //检索记录中是否有要修改的信息{printf("已经找到该记录，是否修改?(y/n)\n");scanf("%s",ch);if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0){printf("家庭成员姓名:");scanf("%s",member[i].name); //输入家庭成员姓名printf("请输入月份:");scanf("%d",&member[i].month); //输入月份printf("请输入年份:");scanf("%d",&member[i].year); //输入年份printf("请输入收入:");scanf("%f",&member[i].income); //输入收入printf("请输入支出:");scanf("%f",&member[i].output); //输入支出member[i].total=member[i].income - member[i].output; //汇总printf("保存成功!");}elsereturn;}else{printf("没有找到!");return;}if((fp=fopen("家庭财务管理系统","wb"))==NULL){printf("不能打开文件!\n");return;}for(j=0;j<m;j++) //将新修改的信息写入指定的磁盘文件中if(fwrite(&member[j] ,LEN,1,fp)!=1){printf("不能保存!");}fclose(fp);}void total() // 统计{FILE *fp;int m=0;if((fp=fopen("家庭财务管理系统","ab+"))==NULL){printf("不能打开记录!\n");return;}while(!feof(fp))if(fread(&member[m],LEN,1,fp)==1)m++; //统计记录个数if(m==0){printf("没有记录!\n");fclose(fp);return;}printf("一共有%d 条记录!\n",m); //将统计的个数输出fclose(fp); }。