How to print the current date and time?

Hi Friends!
I have tried this program to print the current time and date,
#include <iostream>
#include <time.h>
using namespace std;
int main()
time_t tim;
time(&tim);
cout << ctime(&tim);
return 0;
But it show the warning as;
warning C4996: 'ctime': This function or variable may be unsafe. Consider using ctime_s instead.
Can anyone suggest whats wrong with this?

i also got many warring when i use old version keyword. as i note on think thatin new vc++ has many keyword change with _s. the old keyword works even get warring.or you can change to as it suggest.For About ctime_s
Check this link for more detail (RefLink)
No, it shows error, when you use ctime_s instead of ctime.
error C2660: 'ctime_s' : function does not take 1 arguments

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