利用函数库获取当前时间。
1、
#include <stdio.h> #include <time.h> int main(void) { time_t current = time(NULL); struct tm *timer = localtime(¤t); printf("current date and time: %d-%d-%d; week: %d; %d-%d-%d ", timer -> tm_year + 1900, timer -> tm_mon + 1, timer -> tm_mday, timer -> tm_wday, timer -> tm_hour, timer -> tm_min, timer -> tm_sec); return 0; }
2、把当前日期和时间写入到文件中
#include <stdio.h> #include <time.h> int main(void) { FILE *fp; time_t current = time(NULL); struct tm *timer = localtime(¤t); if((fp = fopen("a.txt", "w")) == NULL) printf("aFile open failed. "); else { fprintf(fp, "%d-%d-%d; week: %d; %d-%d-%d ", timer -> tm_year + 1900, timer -> tm_mon + 1, timer -> tm_mday, timer -> tm_wday, timer -> tm_hour, timer -> tm_min, timer -> tm_sec); fclose(fp); } return 0; }