摘要：
#include #include char data_file[]="D:\\%\\datetime.dat";void get_data(void){ FILE *fp; time_t t; if((fp = fopen(data_file,"r")) == NULL) printf("本程序第一次运行!\n"); else { frea... 阅读全文
摘要：
#include #define NUMBER 6#define F_PATH "D:\\C_C++\\ec13-3\\hw.dat"typedef struct { char name[20]; int height; float weight;} student;void swap(student *x,student *y){ student tmp = *x; ... 阅读全文