c - 打印出结构体数组

Question

在这个程序中，我假设读取一个records.ssv 文件并使用结构数组将其打印出来。然而，在打印数组之前要计算平均值。该文件包含学生姓名、ID、考试 1、考试 2、项目 1、项目 2、平均分和成绩(字母、单项)。

当前在打印 eh 数组并计算平均值时遇到问题。我将在下面发布我的代码和输出。

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

typedef struct {
        char name[25];
        int I_D[9];
        int exam[2];
        int project[2];
        char grade;
        float avg;
} STUDENT;

void printStuAry(int size, STUDENT stuAry[]);

int main(void)
{
    STUDENT stuAry[5];

    FILE* f = fopen("records.ssv", "r");
    if (f == NULL) {
            printf("Error opening file records.ssv.\n");
            exit(1);
    }

    char line[65];
    int ind = 0;

    while (fgets(line, sizeof(line), f) != NULL) {
        sscanf(line, "%25[^,] ; %d ; %d ; %d ; %d ; %d ; %c",
               stuAry[ind].name,
               &stuAry[ind].I_D,
               &stuAry[ind].exam[0],
               &stuAry[ind].exam[1],
               &stuAry[ind].project[0],
               &stuAry[ind].project[1],
               &stuAry[ind].grade);
        ind++;
    }
    // calculates average
    stuAry[ind].avg = (stuAry[ind].exam[0] + stuAry[ind].exam[1] +
                       stuAry[ind].project[0] + stuAry[ind].project[1]) /4.0;

         printf("\t+---------+-------+-------+-------+---------+----------+----------+------+\n");
    printf("\t| Index   |Student| ID    | Exam1 | Exam2   |Project1  | Project2 | Grade|\n");
    printf("\t+---------+-------+-------+-------+---------+----------+--------+--------+\n");

    printStuAry(5, stuAry);
    if (fclose(f) == EOF) {
        printf("Error closing file records.ssv.\n");
        exit(2);
    }

    int letter;
    printf("Enter grade letter to search and q to quit");
    scanf("%d", letter);

    while (letter != -1){// tests for whether user wants to end program
        printStuAry(5, stuAry);
    }

    return 0;
}

/*
*Function name: printStuAry
*
*Input Parameters: int size Student Ary
*
*Desription: prints out student Ary
*                                                                
*Return value: 0
*/

void printStuAry(int size, STUDENT stuAry[])
{
        for (int i=0; i<size; i++) {
                printf("\t|  %d     |  %s   | %d    |  %d   |  %d     |   %d    |   %d     |  %c  |\n", //displays student information
                                         i, stuAry[i].name, stuAry[i].exam[0],
                                         stuAry[i].exam[1], stuAry[i].project[0],
                                         stuAry[i].project[1], stuAry[i].avg,
                                         stuAry[i].grade);
        }
}

输出

        +---------+-------+-------+-------+---------+----------+----------+------+
        | Index   |Student| ID    | Exam1 | Exam2   |Project1  | Project2 | Grade|
        +---------+-------+-------+-------+---------+----------+--------+--------+
        |  0     |  Panzer   | -544760936    |  32568   |  -544762280     |   32568    |   -27     |     |
        |  1     |  Basler   | -1718237240    |  32767   |  -544747128     |   32568    |   -104     |     |
        |  2     |  Leaton   | -1718237400    |  32767   |  118     |   0    |   9     |     |
        |  3     |  Bishop   | 4195301    |  0   |  194     |   0    |   62     |     |
        |  4     |  Lucey   | -1718237064    |  32767   |  4197349     |   0    |   -96     |     |
Enter grade letter to search and q to quit

正确的输出应该是什么:

原文:

+-------------------------+--------------+------+------+---------+---------+-------+-----+
| Student Name|Identification|Exam 1|Exam 2|Project 1|Project 1|Average|Grade|
+-------------------------+--------------+------+------+---------+---------+-------+-----+
| Holtkamp, Norman| N21102485| 83| 61| 62| 78| 71.00| C|
| Bellomy, Shavonda| N94185259| 74| 96| 80| 98| 87.00| B|
| Clutter, Loris| N68760306| 83| 68| 93| 70| 78.50| C|
| Rountree, Edythe| N76813896| 98| 91| 90| 81| 90.00| A|
| Waldeck, Marylee| N44293872| 88| 100| 70| 87| 86.25| B|
+-------------------------+--------------+------+------+---------+---------+-------+-----+

Answer 1

尝试用 sscanf(line , "%25[^,] %d %d %d %d %d %c",