首页 > 其他分享 >实验任务6

实验任务6

时间:2022-12-28 19:44:54浏览次数:29  
标签:fp return name int char 任务 实验 printf

实验1.1

#include <stdio.h>
#define N 7
#define M 80
typedef struct {
    char name[M];   
    char author[M]; 
} Book;
int main() {
    Book x[N] = { {"《雕塑家》", "斯科特.麦克劳德"},
                  {"《灯塔》", "克里斯多夫.夏布特"},
                  {"《五号屠宰场》", "库尔特.冯内古特"}, 
                  {"《出卖月亮的人》", "罗伯特.海因莱茵"},
                  {"《大地之上》", "罗欣顿·米斯特里"}, 
                  {"《上学记》", "何兆武"}, 
                  {"《命运》", "蔡崇达"} };
    int i;
    FILE *fp;
    fp = fopen("data1.txt", "w");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }
    for(i = 0; i < N; ++i){
        fprintf(fp, "%-20s %-20s\n", x[i].name, x[i].author);
        printf("%-20s %-20s\n", x[i].name, x[i].author);
    }
    fclose(fp);    
    return 0;
}

 

实验任务1.2

#include <stdio.h>
#define N 10
#define M 80
typedef struct {
    char name[M];    
    char author[M]; 
} Book;
int main() {
    Book x[N]; 
    int i, n;    
    FILE *fp;    
    fp = fopen("data1.txt", "r");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }
    i = 0;
    while(!feof(fp)) {
        fscanf(fp, "%s%s", x[i].name, x[i].author);
        ++i;
    }
    n = i;
    for(i = 0; i < n; ++i)
        printf("%d. %-20s%-20s\n", i+1, x[i].name, x[i].author);    
    fclose(fp);    
    return 0;
}

实验1.2(变动)

实验2.1

#include <stdio.h>
#define N 7
#define M 80
typedef struct {
    char name[M];   
    char author[M]; 
} Book;
int main() {
    Book x[N] = { {"《雕塑家》", "斯科特.麦克劳德"},
                  {"《灯塔》", "克里斯多夫.夏布特"},
                  {"《五号屠宰场》", "库尔特.冯内古特"}, 
                  {"《出卖月亮的人》", "罗伯特.海因莱茵"},
                  {"《大地之上》", "罗欣顿·米斯特里"}, 
                  {"《上学记》", "何兆武"}, 
                  {"《命运》", "蔡崇达"} };
    int i;    
    FILE *fp;
    fp = fopen("data2.dat", "wb"); 
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }
    fwrite(x, sizeof(Book), N, fp);    
    fclose(fp);    
    return 0;
}

实验2.2

#include <stdio.h>
#define N 7
#define M 80
typedef struct {
    char name[M];   
    char author[M]; 
} Book;
int main() {
    Book x[N] = { {"《雕塑家》", "斯科特.麦克劳德"},
                  {"《灯塔》", "克里斯多夫.夏布特"},
                  {"《五号屠宰场》", "库尔特.冯内古特"}, 
                  {"《出卖月亮的人》", "罗伯特.海因莱茵"},
                  {"《大地之上》", "罗欣顿·米斯特里"}, 
                  {"《上学记》", "何兆武"}, 
                  {"《命运》", "蔡崇达"} };
    int i;    
    FILE *fp;
    fp = fopen("data2.dat", "wb"); 
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }
    fwrite(x, sizeof(Book), N, fp);    
    fclose(fp);    
    return 0;
}

实验3.1

// 使用fputs()将字符串写入文本文件

#include <stdio.h>
#define N 5
#define M 80

int main() {
    char songs[N][M] = { "Working\'s Blues",
                         "Everything Will Flow",
                         "Streets of London",
                         "Perfect Day",
                         "Philadelphia"};
    int i;
    FILE *fp;

    fp = fopen("data3.txt", "w");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }

    for(i = 0; i < N; ++i) {
        fputs(songs[i], fp);
        fputs("\n", fp);
    }
    
    fclose(fp);
    return 0;
}

  

实验3.2

// 使用fputs()将字符串写入文本文件

#include <stdio.h>
#define N 5
#define M 80

int main() {
    char songs[N][M] = { "Working\'s Blues",
                         "Everything Will Flow",
                         "Streets of London",
                         "Perfect Day",
                         "Philadelphia"};
    int i;
    FILE *fp;

    fp = fopen("data3.txt", "w");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }

    for(i = 0; i < N; ++i) {
        fputs(songs[i], fp);
        fputs("\n", fp);
    }
    
    fclose(fp);
    return 0;
}

  

实验3.3

#include <stdio.h>

int main() {
    char ch;
    FILE *fp;

    fp = fopen("data3.txt", "r");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }

    ch = fgetc(fp);
    while(ch != EOF) {
        putchar(ch);
        ch = fgetc(fp);
    }

    fclose(fp);
    return 0;
}

  

实验4

#include <stdio.h>

int main() {
    char ch;
    FILE *fp;

    fp = fopen("data3.txt", "r");
    if(fp == NULL) {
        printf("fail to open file\n");
        return 1;
    }

    ch = fgetc(fp);
    while(ch != EOF) {
        putchar(ch);
        ch = fgetc(fp);
    }

    fclose(fp);
    return 0;
}

  

 

实验5

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define N 10

typedef struct {
long int id;
char name[20];
float objective; // 客观题得分
float subjective; // 操作题得分
float sum;
char level[10];
} STU;

// 函数声明
void input(STU s[], int n);
void output(STU s[], int n);
void process(STU s[], int n);

int main() {
STU stu[N];

printf("从文件读入%d个考生信息: 准考证号,姓名,客观题得分(<=40),操作题得分(<=60)\n", N);
input(stu, N);

printf("\n对考生信息进行处理: 计算总分,确定等级\n");
process(stu, N);

printf("\n打印考生完整信息, 并保存到文件中");
output(stu, N);

return 0;
}

// 从文本文件examinee.txt读入考生信息:准考证号,姓名,客观题得分,操作题得分
void input(STU s[], int n) {
int i;
FILE *fin;

fin = fopen("examinee.txt", "r");
if (fin == NULL) {
printf("fail to open file\n");
exit(0);
}

while (!feof(fin)) {
for (i = 0; i < n; i++)
fscanf(fin, "%ld %s %f %f", &s[i].id, s[i].name, &s[i].objective, &s[i].subjective);
}

fclose(fin);
}

// 输出考生完整信息: 准考证号,姓名,客观题得分,操作题得分,总分,等级
// 不仅输出到屏幕上,还写到文本文件result.txt中
void output(STU s[], int n) {
FILE *fout;
int i;

// 输出到屏幕
printf("\n");
printf("准考证号\t姓名\t客观题得分\t操作题得分\t总分\t\t等级\n");
for (i = 0; i < n; i++)
printf("%ld\t\t%s\t%.2f\t\t%.2f\t\t%.2f\t\t%s\n", s[i].id, s[i].name, s[i].objective, s[i].subjective, s[i].sum, s[i].level);

// 保存到文件
fout = fopen("result.txt", "w");
if (!fout) {
printf("fail to open or create result.txt\n");
exit(0);
}

fprintf(fout, "准考证号\t\t姓名\t客观题得分\t操作题得分\t总分\t\t等级\n");

for (i = 0; i < n; i++)
fprintf(fout, "%ld\t\t%s\t%.2f\t\t%.2f\t\t%.2f\t\t%s\n", s[i].id, s[i].name, s[i].objective, s[i].subjective, s[i].sum, s[i].level);

fclose(fout);
}

// 对考生信息进行处理:计算总分,排序,确定等级
void process(STU s[], int n) {
int i, j;
STU temp;
for (i = 0; i < n; i++)
{
s[i].sum = s[i].objective + s[i].subjective;
}
for (i = 0; i < n - 1; i++)
for (j = 0; j < n - i - 1; j++)
if (s[j].sum < s[j + 1].sum)
{
temp = s[j];
s[j] = s[j + 1];
s[j + 1] = temp;
}
for (i = 0; i < n; i++)
{
if (i < n * 0.1)
strcpy(s[i].level, "优秀");
else if (i >= n * 0.1 && i < n * 0.5)
strcpy(s[i].level, "合格");
else
strcpy(s[i].level, "不合格");
}
}

实验6

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
typedef struct student
{
int number;
char name[20];
char Class[30];
}STU;
int main()
{
STU a[80];
int i, j;
FILE* fp;
fp = fopen("list.txt", "r");
if (fp == NULL)
{
printf("fail to open file\n");
return 1;
}
for (i = 0; i < 80; i++)
fscanf(fp, "%d %s%s", &a[i].number, a[i].name, a[i].Class);
fclose(fp);
fp = fopen("lucky.txt", "w");
for (i = 0; i < 5; i++)
{
j = rand() % 80;
printf("%d %s %s\n", a[j].number, a[j].name, a[j].Class);
fprintf(fp, "%d %s %s", a[j].number, a[j].name, a[j].Class);
fprintf(fp, "\n");
}
fclose(fp);
system("pause");
return 0;
}

  

 

标签:fp,return,name,int,char,任务,实验,printf
From: https://www.cnblogs.com/you123321/p/17011133.html

相关文章

  • 实验5
    task1.#include<stdio.h>#include<string.h>#defineN100typedefstruct{charnum[10];//学号ints1;//期末成绩ints2......
  • 亚马逊云科技 Build On 2022 - AIot 第二季物联网专场实验心得
    亚马逊云科技BuildOn2022-AIot第二季物联网专场实验心得大家好BuildOn是什么本次BuildOn主题介绍参与本场活动您能学到什么本场实验所用到的AWS服务实验部分1.线上......
  • 【新知实验室 TRTC&IM】实时互动课堂最佳实践
    【新知实验室TRTC&IM】实时互动课堂最佳实践​​一、新知实验室-TRTC腾讯云音视频产品体验官计划​​​​活动简介​​​​二、产品简介​​​​TRTC​​​​IM​​​​三......
  • 实验六
    1#include<stdio.h>2intmain()3{4FILE*fp;5intcount=0;6charch;7fp=fopen("date4.txt","r");8if(fp==NULL)9......
  • Oozie 调度MapReduce任务
    目录​​1.解压Oozie官方提供的案例​​​​2.编辑文件​​​​3.拷贝待执行的jar包到map-reduce的lib目录下​​​​4.上传配置好的app文件夹到HDFS​​​​5.执行任......
  • 宝塔上加shell定时任务
      脚本内容:#!/bin/bashPATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/binexportPATHstep=5for((i=0;i<60;i=(i+step)));do......
  • 麒麟系统升级导致任务栏不显示
    麒麟系统升级导致任务栏不显示麒麟系统升级后导致任务栏不显示,如下图:具体解决方案为:桌面空白处,右键--打开终端 输入如下命令:Sudo**apt**reinstall**ukui-control-cen......
  • Linux计划任务
    crontab#选项-e#编辑计划任务-l#查看计划任务-u#给其他用户设置计划任务-r#清空计划任务格式:分时日月周绝对路径......
  • DAG任务调度系统 Taier 演进之道,探究DataSourceX 模块
    熟悉Taier的小伙伴们应该都知道,在11月7日发布的​​Taier1.3新版本​​中,我们融合了「DataSourceX模块」。这是十分重要的一个变化,移除Taier外部插件依赖,新增数据源插件相......
  • python实验报告(第11章)
    实验11:使用Python操作数据库一、实验目的和要求1、学会数据库编程接口;2、学会使用SQLite;3、学会使用MySQL。二、实验环境软件版本:Python3.1064_bit三、实验过程......