sas日期显示为数字，但是数据格式是字符型的，我需要将字符型变量的日期显示出正常的年月日

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

int main() {
    char date_str[80];
    time_t rawtime;
    struct tm * timeinfo;

    time(&rawtime);
    timeinfo = localtime(&rawtime);

    strftime(date_str, 80, "%Y-%m-%d", timeinfo);
    printf("Current date: %s\n", date_str);

    return 0;
}

\u8fd9\u4e2a\u7a0b\u5e8f\u4f7f\u7528 localtime() \u51fd\u6570\u6765\u5c06\u5f53\u524d\u7684\u65f6\u95f4\u8f6c\u6362\u6210\u7edf\u5408\u65f6\u7684\u65f6\u95f4\u7ed3\u6784\u4f53\u3002\u7136\u540e\uff0c\u8fd9\u4e2a\u7a0b\u5e8f\u4f7f\u7528 strftime() \u51fd\u6570\u6765\u683c\u5f0f\u5316\u65e5\u671f\u5b57\u7b26\u578b\u53d8\u91cf\u6210\u4e3a\u6b63\u786e\u7684\u5e74\u6708\u65e5\u7684\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528 printf() \u51fd\u6570\u6765\u663e\u793a\u65e5\u671f\u5b57\u7b26\u4e32\u3002

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