reset.c

用C 语言程序做的家庭财务管理系统、猜数字游戏、学生成绩管理系统

/*产生新记录*/
#include "stdio.h"
ResetRecord(int n)
{
int i,j;
int recnum=0;
int maxscore=0;
player r[5];
FILE *fp;
player Pro;
player TmpS;
getchar();
/*输入玩家姓名*/
printf("What is you name?"); 
scanf("%s",Pro.name);
Pro.score=n;/*玩家成绩从start()函数传递的参数获得*/
printf("reset name is:%s",Pro.name);
printf("reset Proscore:%d",n);
/*以读方式打开文件*/
fp=fopen("record","rb");
if (fp == NULL)
    {
        printf("\nOpen file fail!End with any key\n");
        perror("Open file fail");
        getch();
        exit(1);
    }
/*循环从文件中读取纪录,放于数组中，数组长度为5*/
while(((fread(&TmpS,sizeof(player),1,fp)) != (int)NULL)&&(recnum<5))
    {
     strcpy(r[recnum].name,TmpS.name);
     r[recnum].score=TmpS.score;
     recnum++;
    }
fclose(fp);
/*如果纪录成员没有5个，则顺次在往数组中添加记录*/
if(recnum<5)
    {
     strcpy(r[recnum].name,Pro.name);
     r[recnum].score=Pro.score;
     recnum++;
    }
/*如果记录成员已经有5个，则找出猜数字次数最多的纪录，即最差玩家*/
/*如果当前纪录比此记录快，则替换*/
else
    {
    /*循环找出5个中最慢记录*/
    for(i=0;i<5;i++)
        {
         if(r[i].score>maxscore)
            {
            maxscore=r[i].score;
            j=i;
            }
        }
    /*如果当前人的记录比最慢记录快，或相等，则替换，使玩家入榜，最差玩家落榜*/
    if(Pro.score<=r[j].score)
        {
         strcpy(r[j].name,Pro.name);
         r[j].score=Pro.score;
        }
    }
fp=fopen("record","wb");/*以写的方式打开排行榜*/
if (fp == NULL)
    {
        printf("\nOpen file fail!End with any key\n");
        perror("Open file fail");
        getch();
        exit(1);
    }
/*循环把更新过的排行情况写入排行榜*/
for(i=0;i<recnum; i++)
        {
            if(fwrite(&r[i],sizeof(player),1,fp)!=1)
            {
                printf("\nWrite file fail!end with anykey.\n");
                perror("Write file fail!");
                    getch();
                    exit(1);
            }
        }
fclose(fp);
/*显示更新排行过的排行榜*/
fp=fopen("record","rb");
    if (fp == NULL)
    {
        printf("\nOpen file fail!End with any key \n");
        perror("Open file fail");
        getch();
        exit(1);
    }
    printf("the record is:\n");
    printf("\nName\tscore\n");
    while(fread(&TmpS,sizeof(player),1,fp) != (int)NULL)
    {
        printf("\n%s\t%d\n",TmpS.name,TmpS.score);
    }
    fclose(fp);
}