`time_t` is a Standard-C data type to hold the seconds since UNIX epoch, that since the 1.1.1970.
Questions tagged [time-t]
171 questions
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votes
1 answer
Reading and displaying time stamp from a binary file
I am currently working on a college c project in which I have wrote readings saved in a struct to a binary file. In this struct I am also saving the time and date of which the items were entered. i am then opening the file in a seperate program and…
Ciaran Mallory
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2 answers
Char to time_t conversion always returns Wed Dec 31 23:59:59 1969
I am working on some code for my ESP8266 in Arduino. I want to send a timestamp to another ESP via UDP.
In the setup(){ I initialize the time using
configTime(3 * 3600, 0, "pool.ntp.org", "time.nist.gov");
and in the loop(){
time_t timestamp =…
binarykitten
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2 answers
Set string as current date
I need to write files with the current date included in the name.
Currently this is what I have tried:
time_t t = time(0);
struct tm * now = localtime(&t);
string date=now->tm_mday+'/'+(now->tm_mon+1)+'/'+(now->tm_year+1900);
Preferably…
Cameron L
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1 answer
Standard C - How to use a unix epoch timestamp other than Jan 1, 1970?
Timestamp is defined as the number of seconds elapsed since midnight of January 1, 2000, UTC. Using standard C only, how to get unix timestamp with epoch of Jan 1, 2000 UTC and not Jan 1, 1970?
time(NULL) returns seconds since January 1,…
Syler
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3 answers
struct tm inside another struct - c
I'm trying to calculate the date difference between two dates, using mktime and difftime. One of the dates is a struct tm inside another struct and the other date is a struct tm inside main.
mktime works fine one the date inside main, but keeps…
John Blaze
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votes
1 answer
How to properly send time_t pointer to function? Encountering valgrind error when trying to do so
I am trying to send a time_t to a function by using a time_t pointer variable. I don't get any compiler warnings when compiling my code, but a valgrind error when I run the code with valgrind.
My code:
printTime(time_t *time){
J. Doe
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