Hi Marco,
thanks I have already used strcmp() then I know if the result will be == 0 the string are exactly .
So then I not understood bad your words I can retrieve from my RTC. day,month,year,hours, minute do my string and then I can compare with the string that I've inside my array ... if are equal do something correct ?
you have reason when you said : "These are standard C functions that have existed for at least 30 years " but I've started to develop software after 10 year and I'm a little bit rusty ... for the reason I ask help ... but after i give back always a feedback about my tried . I think is a respect for who help you and the "forum" sense ...
Thanks
gnux