成绩排序-题解(C语言代码)满分题解！！

为什么名字定义是char name[102]啊？如果其他地方完全不变，就这一处改成char name[100]，系统就会判答案输出错误%50，求解

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct student{
		char name[101];
		int age;
		int score;
	}student;
int cmp(const void *a,const void *b){
	student *c=(student *)a;
	student *d=(student *)b;
	if(c->score!=d->score) return c->score<d->score?1:-1; 
	if(c->name!=d->name) return strcmp(c->name,d->name);
	return c->age<d->age?-1:1;
} 
int main(){
	int n;
	student a[1000];
	while((scanf("%d",&n))!=EOF){
	    getchar();
		for(int i=0;i<n;i++){
			scanf("%s %d %d",a[i].name,&a[i].age,&a[i].score);
			getchar();
		}
		qsort(a,n,sizeof(a[0]),cmp);