prtime.c

unix环境高级编程的源代码

#include    <time.h>
#include    "ourhdr.h"

int
main(void)
{
    time_t        caltime;
    struct tm    *tm;
    char        line[MAXLINE];

    if ( (caltime = time(NULL)) == -1)
        err_sys("time error");
    if ( (tm = localtime(&caltime)) == NULL)
        err_sys("localtime error");

    if (strftime(line, MAXLINE, "%a %b %d %X %Z %Y\n", tm) == 0)
        err_sys("strftime error");
    fputs(line, stdout);

    exit(0);
}