C语言获取系统当前时间转化成时间字符串「建议收藏」

全栈程序员-站长 • 2022年1月30日下午3:00 • 未分类 • 阅读 43

大家好，又见面了，我是全栈君。

因为保存的文件须要加上保存的时间，所以须要一个函数来将系统当前时间获取出来，同一时候转换成时间字符串。详细的时间代码例如以下：

       
       
        
        #include <stdio.h>
       
       
       
       
        
        #include <time.h>
       
       
       
       

       
       
       
       
        
        int getNowTime(char *nowTime)
       
       
       
       
        
        {
       
       
       
       
        
        	char acYear[5] = {0};
       
       
       
       
        
        	char acMonth[5] = {0};
       
       
       
       
        
        	char acDay[5] = {0};
       
       
       
       
        
        	char acHour[5] = {0};
       
       
       
       
        
        	char acMin[5] = {0};
       
       
       
       
        
        	char acSec[5] = {0};
       
       
       
       

       
       
       
       
        
        	time_t now;
       
       
       
       
        
            struct tm* timenow;
       
       
       
           
       
       
       
       
        
            time(&now);
       
       
       
       
        
            timenow = localtime(&now);
       
       
       
       

       
       
       
       
        
            strftime(acYear,sizeof(acYear),"%Y",timenow);
       
       
       
       
        
            strftime(acMonth,sizeof(acMonth),"%m",timenow);
       
       
       
       
        
            strftime(acDay,sizeof(acDay),"%d",timenow);
       
       
       
       
        
            strftime(acHour,sizeof(acHour),"%H",timenow);
       
       
       
       
        
            strftime(acMin,sizeof(acMin),"%M",timenow);
       
       
       
       
        
            strftime(acSec,sizeof(acSec),"%S",timenow);
       
       
       
       

       
       
       
       
        
        	strncat(nowTime, acYear, 4);
       
       
       
       
        
        	strncat(nowTime, acMonth, 2);
       
       
       
       
        
        	strncat(nowTime, acDay, 2);
       
       
       
       
        
        	strncat(nowTime, acHour, 2);
       
       
       
       
        
        	strncat(nowTime, acMin, 2);
       
       
       
       
        
        	strncat(nowTime, acSec, 2);
       
       
       
       

       
       
       
       
        
        	return 0;
       
       
       
       
        
        }
       
       
       
       

       
       
       
       
        
        int main(int argc, char *argv[])
       
       
       
       
        
        {
       
       
       
       
        
            char nowTime[32] = {0};
       
       
       
           
       
       
       
       
        
            getNowTime(nowTime);
       
       
       
       
        
            printf("nowTime is %s.\n", nowTime);
       
       
       
           
       
       
       
       
        
            return 0;
       
       
       
       
        
        }