意外输出，丢失字母和重复[关闭]

Question

这是我的代码，最后一部分是意外的输出。我不知道为什么 first student 名字的第一个字母丢失了，表格重复了 2 次。请帮助我，谢谢。

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

struct studentInfo{
    char fullName[60];
    char ID[10];
    char birthDate[11];
    float algebra;
    float calculus;
    float basicProgramming;
    float GPA;
};
// Task 3 - Student list as a table
void print_table (struct studentInfo *students, int number) {
    printf("| %-10s | %-30s | %-10s | %-7s | %-8s | %-16s | %-5s |\n",
           "ID", "Full Name", "Birthdate", "Algebra", "Calculus", "Basic Programming", "GPA");
    printf("|%s|\n", "-----------------------------------------------------------------------------------------------------------");

    for (int i = 0; i < number; i++) {
        printf("| %10s | %-30s | %10s | %7.2f | %8.2f | %17.2f | %4.2f |\n",
               students[i].ID,
               students[i].fullName,
               students[i].birthDate,
               students[i].algebra,
               students[i].calculus,
               students[i].basicProgramming,
               students[i].GPA);
    }
}
// Task 5 - Highest, lowest GPA student and highest basic programming point 
struct studentInfo highest_gpa(struct studentInfo students[], int number) {
    struct studentInfo highest = students[0];
    for (int i = 1; i < number; i++) {
        if (students[i].GPA > highest.GPA) {
            highest = students[i];
        }
    }
    return highest;
}
struct studentInfo lowest_gpa(struct studentInfo students[], int number) {
    struct studentInfo lowest = students[0];
    for (int i = 1; i < number; i++) {
        if (students[i].GPA < lowest.GPA) {
            lowest = students[i];
        }
    }
    return lowest;
}
struct studentInfo bp_Point(struct studentInfo students[], int number) {
    struct studentInfo highest_bp_Point = students[0];
    for (int i = 1; i < number; i++) {
        if (students[i].basicProgramming > highest_bp_Point.basicProgramming) {
            highest_bp_Point = students[i];
        }
    }
    return highest_bp_Point;
}
// Task 6 - Print out student first name
void first_name (struct studentInfo *students, int number) {
    for (int i = 0; i < number; i++) {
        char *last_space;
        last_space = strrchr(students[i].fullName, ' ');
        if (last_space == NULL) {
            printf("Error: No space found in name.\n");
        }
        else {
            printf("\nFirst name of %s: %s\n", students[i].fullName, last_space + 1);
        }
    }
}
// Task 10 - Sort list by GPA in descending order
void bubbleSort(struct studentInfo *students, int number) {
    int key, i, j;
    for (i = 0; i < number - 1; i++) {
        for (j = 0; j < number - i - 1; j++) {
            if (students[j].GPA < students[j + 1].GPA) {
                // swap students[j].GPA and students[j + 1].GPA
                key = students[j].GPA;
                students[j].GPA = students[j + 1].GPA;
                students[j + 1].GPA = key;
            }
        }
    }
}
int main(){
    // Task1 - Enter student number
    int i, number;
    printf("Enter the number of students: ");
    scanf("%d", &number);
    getchar();

    while(number > 1000) {
        printf("Your number is too high. Maximum number of student is 1000. Please enter again: ");
        scanf("%d", &number);
    }

    //Task2 - get student info
    struct studentInfo students[number];
    
    for (i = 0; i < number; i++) {
        printf("\nEnter data for student %d:\n", i+1);
        printf("Enter student %d name: ", i+1);
        getchar(); // consume the newline character left in the input stream
        fgets(students[i].fullName, sizeof(students[i].fullName), stdin); //use fgets instead of scanf
        students[i].fullName[strcspn(students[i].fullName, "\n")] = 0; // Remove trailing newline
 
        printf("Enter student %d ID: ", i+1);
        scanf("%s", students[i].ID);
        
        printf("Enter student %d birthdate: ", i+1);
        scanf("%s", students[i].birthDate);
       
        printf("Enter student %d Linear Algebra point: ", i+1);
        scanf("%f", &students[i].algebra);
        
        printf("Enter student %d Calculus point: ", i+1);
        scanf("%f", &students[i].calculus);
        
        printf("Enter student %d Basic Programming point: ", i+1);
        scanf("%f", &students[i].basicProgramming);

        students[i].GPA = (students[i].algebra + students[i].calculus + students[i].basicProgramming)/3;
    }

    //Task3 - print student list
    printf("\nStudents list: \n");
    print_table(students, number);

    // Task 4 - print table to text file
    FILE *studentsList = fopen("C:\\Users\\Chou\\Labwork C\\.vscode\\studentsinfo.txt", "w"); // write only 
    /* Notice the difference between \\ and \*/
    fprintf(studentsList, "| %-10s | %-20s | %-10s | %-7s | %-8s | %-16s | %-5s |\n", 
        "Full name", "ID", "Birthdate", "Algebra", "Calculus", "Basic Programming", "GPA");
    for (int i = 0; i < number; i++) {
        printf("| %10s | %-20s | %10s | %7.2f | %8.2f | %17.2f | %4.2f |\n", 
            students[i].ID,
            students[i].fullName,
            students[i].birthDate,
            students[i].algebra,
            students[i].calculus,
            students[i].basicProgramming,
            students[i].GPA
        );
    }
    fclose(studentsList);

    // Task 5
    struct studentInfo highest_gpa_student = highest_gpa(students, number);
    printf("Student with highest GPA:\n %s\t%s\t%2.1f", highest_gpa_student.fullName, highest_gpa_student.ID, highest_gpa_student.GPA);
    struct studentInfo lowest_gpa_student = lowest_gpa(students, number);
    printf("\nStudent with lowest GPA:\n %s\t%s\t%2.1f", lowest_gpa_student.fullName, lowest_gpa_student.ID, lowest_gpa_student.GPA);
    struct studentInfo highest_bp_student = bp_Point(students, number);
    printf("\nStudent with highest BP mark:\n %s\t%s\t%2.1f", highest_bp_student.fullName, highest_bp_student.ID, highest_bp_student.basicProgramming);
    
    // Task 6 - call function
    first_name (students, number);

    // Task 10
    bubbleSort (students, number);
    printf("\nStudents list by GPA in descending order:\n");
    print_table (students, number);
    return 0;
}

它的输出：

输入学生人数：3

输入学生 1 的数据： 输入学生1姓名：nguyen minh ha 输入学生1 ID：22bi123456 输入学生 1 的生日：12/03/2003 输入学生1线性代数点：11.2 输入学生1微积分点：14.3 输入学生 1 基本编程点：17.6

输入学生 2 的数据： 输入学生2姓名：tran trung hieu 输入学生2 ID：22bi789245 输入学生 2 的生日：12/1/2004 输入学生2线性代数点：12.4 输入学生2微积分点：13.6 输入学生2基础编程点：17.8

输入学生 3 的数据： 输入学生3姓名：la ha linh 输入学生3 ID：22bi465883 输入学生 3 的生日：19/8/2004 输入学生3线性代数点：11.2 输入学生3微积分点：14.6 输入学生 3 基本编程点：19

学生名单： |编号 |全名 |生日 |代数 |微积分 |基础编程 |平均成绩 | |------------------------------------------------ ---------------------------------------------- ------| | 22bi12345612/03/2003 | Guyen minh ha | 2003 年 12 月 3 日 | 11.20 | 14.30 | 17.60 | 14.37 | | 22bi78924512/1/2004 |陈忠孝 | 2004 年 12 月 1 日 | 12.40 | 13.60 | 17.80 | 14.60 | | 22bi46588319/8/2004 |拉哈灵 | 2004 年 8 月 19 日 | 11.20 | 14.60 | 19.00 | 14.93 | | 22bi12345612/03/2003 | Guyen minh ha | 2003 年 12 月 3 日 | 11.20 | 14.30 | 17.60 | 14.37 | | 22bi78924512/1/2004 |陈忠孝 | 2004 年 12 月 1 日 | 12.40 | 13.60 | 17.80 | 14.60 | | 22bi46588319/8/2004 |拉哈灵 | 2004 年 8 月 19 日 | 11.20 | 14.60 | 19.00 | 14.93 | GPA最高的学生： 拉哈灵 22bi46588319/8/2004 14.9 GPA最低的学生： guyen minh ha 22bi12345612/03/2003 14.4 BP 分数最高的学生： 拉哈灵 22bi46588319/8/2004 19.0 guyen minh ha的名字：ha

Tran trung hieu的名字：hieu

la ha linh的名字：linh

按GPA降序排列的学生名单： |编号 |全名 |生日 |代数 |微积分 |基础编程 |平均成绩 | |------------------------------------------------ ---------------------------------------------- ------| | 22bi12345612/03/2003 | Guyen minh ha | 2003 年 12 月 3 日 | 11.20 | 14.30 | 17.60 | 14.93 | | 22bi78924512/1/2004 |陈忠孝 | 2004 年 12 月 1 日 | 12.40 | 13.60 | 17.80 | 14:00 | | 22bi46588319/8/2004 |拉哈灵 | 2004 年 8 月 19 日 | 11.20 | 14.60 | 19.00 | 14.00 |

我已经尝试修复并意识到可能是任务 2 中的错误导致其他任务的错误