首页 > 其他分享 >实验6

实验6

时间:2022-12-28 09:12:51浏览次数:31  
标签:int void char STU 实验 cr include

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char cr;
    FILE *fp;
    long count;
    if((fp=fopen("data4.txt","r"))==NULL)
    {
        printf("Can't open file.\n");
        exit(1);
    }
    count = 0;
    while((cr=fgetc(fp))!=EOF)
    {
        if(cr!=' '&&cr!='\n'&&cr!='\t')
        count++;
    }
    fclose(fp);
    printf("date4.txt中共有 %ld 个字符。\n",count);
    return 0;
}

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#pragma warning(disable:4996)
#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 t;
    for (i = 0; i < n; i++)
        s[i].sum = s[i].objective + s[i].subjective;
    for (j = 0; j < n; j++)
        for (i = 0; i < n - j - 1; i++)
        {
            if (s[i].sum < s[i + 1].sum)
            {
                t = s[i + 1];
                s[i + 1] = s[i];
                s[i] = t;
            }
        }
    for (i = 0; i < n; i++)
    {
        if (i < 0.1 * (n - 1))
            strcpy(s[i].level, "优秀");
        else if (i >= 0.1 * (n - 1) && i < 0.5 * (n - 1))
            strcpy(s[i].level, "合格");
        else if (i >= 0.5 * (n - 1))
            strcpy(s[i].level, "不合格");
    }
}

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include<time.h>
#define N 80
typedef struct {
    long int id;
    char name[N];
    char clas[N];
} STU;
void input(STU s[],int n);
void output(STU s[],int n);
int main()
{
    STU stu1[80];
    STU stu2[5];
    int i,j;
     input(stu1,N);    
    
    srand(time(NULL));
    for(i=0;i<5;i++){
        stu2[i].id=204942000+rand()%80+1;
    }
    for(i=0;i<5;i++)
    {
        for(j=0;j<80;j++)
        {
            if(stu1[j].id==stu2[i].id)
            stu2[i]=stu1[j];
        }
    }
    output(stu2,5);
    return 0;
 }
  
 void input(STU s[],int n)
 {
      int i;
    FILE *fin;
 
    fin = fopen("D://list.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 %s", &s[i].id, s[i].name,s[i].clas);
    }
 
    fclose(fin);
 }
  
 void output(STU s[],int n)
 {
     FILE *fout;
    int i;
     
    for (i = 0; i < n; i++)
        printf("%ld\t\t%s\t\t%s\n", s[i].id, s[i].name, s[i].clas);
     
     
    fout = fopen("lucky.txt", "w");
    if (!fout) {
        printf("fail to open or create lucky.txt\n");
        exit(0);
    }
     
 
    for (i = 0; i < n; i++)
        fprintf(fout, "%ld\t\t%s\t\t%s\n", s[i].id, s[i].name, s[i].clas);
 
    fclose(fout);
 }

 

标签:int,void,char,STU,实验,cr,include
From: https://www.cnblogs.com/webwang2233/p/17009396.html

相关文章

  • 实验六
    //将图书信息写入文本文件data1.txt#include<stdio.h>#defineN7#defineM80typedefstruct{charname[M];//书名charauthor[M];//作者}......
  • 实验六
    实验任务4#define_CRT_SECURE_NO_WARNINGS#include<stdio.h>#include<stdlib.h>intmain(){chara[2][100]={"nuist2022-nuist2023","FIFAWorldCup2022"};......
  • 实验五
    //P286例8.17//对教材上的程序作了微调整,把输出学生信息单独编写成一个函数模块//打印不及格学生信息和所有学生信息程分别调用#include<stdio.h>#include<st......
  • 实验6 文件应用编程
    1.实验任务1/*//将图书信息写入文本文件data1.txt#include<stdio.h>#defineN7#defineM80typedefstruct{charname[M];//书名charauthor[......
  • 实验五
    1#include<stdio.h>#include<string.h>#defineN3//运行程序输入测试时,可以把这个数组改小一些输入测试typedefstructstudent{intid;//学号cha......
  • 实验六
    4#define_CRT_SECURE_NO_WARNINGS#include<stdio.h>intmain(){FILE*fp;fp=fopen("D:\\.temp\\data4.txt","r");if(feof(fp)){printf......
  • 实验六
    #define_CRT_SECURE_NO_WARNINGS#include<stdio.h>#include<stdlib.h>intmain(){FILE*fp;charch;intcount=0;fp=fopen("E:\\study\\sours......
  • 实验五
    #define_CRT_SECURE_NO_WARNINGS#include<stdio.h>#include<stdlib.h>#include<string.h>#defineN100typedefstructstudent{charnum[10];ints1;......
  • 实验五
    任务1#include<stdio.h>#include<string.h>#defineN3typedefstructstudent{intid;charname[20];charsubj......
  • 实验任务6
    #include<stdio.h>#include<stdlib.h>intmain(){charcr;FILE*fp;longcount;if((fp=fopen("data4.txt","r"))==NULL){printf("Can'tope......