输出之一在简单的struct程序上显示（空）结果（无结构数组）

Question

我已经创建了一个简单的程序，用于显示大学生数据并计算分数累计到一个年级（A，B，C，D，E）并使用struct（禁止使用Struct Array创建Im），因此问题是输出之一，当用％s打印时，“成绩”给出（空）结果，而用％c打印时给出完全空白的结果。顺便说一句，“成绩”数据的类型为char。这是完整的代码。

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

struct student

char nim[11];
char name[100];
char subjectCode[5];
int sks;
char grade;
studentScore[100];

bool cekKarakter(char input[])

for(int x = 0; x < strlen(input); x++)

    if(isdigit(input[x]))
    return false;

return true;


bool cekNumeric(char input[])

for(int x = 0; x < strlen(input); x++)

    if(input[x] >= 48 && input[x] <= 57)
    return false;

return true;


int main()

int n;
printf("Input number of Student Data: ");
scanf("%d", &n); 
fflush(stdin);
printf("\n\n");
for(int i = 1; i <= n; i++)

    do
    
        printf("NIM [Hanya numerik][10 Digit]: ");
        gets(studentScore[i].nim);
        fflush(stdin);
    
    while(strlen(studentScore[i].nim) != 10 || 
 cekNumeric(studentScore[i].nim));

    printf("\n");

    do
    
        printf("Name [Hanya karakter]: ");
        gets(studentScore[i].name); 
        fflush(stdin);
    
    while(strlen(studentScore[i].name) < 5 || strlen(studentScore[i].name) > 
 30 || cekKarakter(studentScore[i].name) == false);

    printf("\n");

    do
    
        printf("Subject Code [Must 5 length]: ");
        gets(studentScore[i].subjectCode); 
        fflush(stdin);
    
    while(strlen(studentScore[i].subjectCode) != 5);

    printf("\n");

    do
    
        printf("SKS [Min 2|Max 8]: ");
        scanf("%d", &studentScore[i].sks); 
        fflush(stdin);
    
    while(studentScore[i].sks < 2 || studentScore[i].sks > 8);

    printf("\n");

    int score[5];
    int WeightGrade = 0; 

    printf("Input 5 College Subject Score:\n\n");
    for(int z = 0; z < 5; z++)
    
        do
        
            printf("Input Score[%d][Must be between 0 and 100]: ", z + 1);
            scanf("%d", &score[z]);
        
        while(score[z] < 0 || score[z] > 100);

        WeightGrade += score[z];
    

    if(WeightGrade / 25 == 4)
    
        studentScore[i].grade = 'A';
    
    else if(WeightGrade / 25 >= 3 && WeightGrade / 25 < 4)
    
        studentScore[i].grade = 'B';
    
    else if(WeightGrade / 25 >= 2 && WeightGrade / 25 < 3)
    
        studentScore[i].grade = 'C';
    
    else if(WeightGrade / 25 >= 1 && WeightGrade / 25 < 2)
    
        studentScore[i].grade = 'D';
    
    else if(WeightGrade / 25 == 0)
    
        studentScore[i].grade = 'E';
    


printf("\nStudent Data\n");

for(int i = 1; i <= n; i++)

    printf("NIM: %s\nName: %s\nSubject Code: %s\nSKS: %d\nGrade: %s\n",
        studentScore[i].nim, 
        studentScore[i].name, 
        studentScore[i].subjectCode, 
        studentScore[i].sks, 
        studentScore[i].grade); 

getchar();

return 0;

这是程序运行时的图像(null) output result using %s as printed