#include
#include
#include
#include
#define N 20
struct xk
{
int num;
char name[20];
char xz;
int zks;
int ks;
int syks;
int xf;
int kk;
}kc[N];
void lr()
{
FILE *fp;
int i,n;
fp=fopen("d://kcxx.txt","ab+");
if(fp==NULL){
printf("Can not open file\n");
exit(1);
}
printf("输入几门课程信息\n");
scanf("%d",&n);
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