Leap Year

[karafire2003]

Hey there...i was wondering if someone can help me with my program. I'm doing the leap year program thing. i thought i had it all figured out, but it ALWAYS says that it's not a leap year. here's my code...if you can help i'd gladly appreciate it.
int year, test4, test100, test400;
printf("The amazing leap year teller thingie thing!!!\nPleas e enter the year to be tested: ");
scanf("year");
test4 = year%4;
test100 = year%100;
test400 = year%400;
if((test4 == 0 && test100 != 0) || test400 == 0)
printf("DING!! Leap Year");
else
printf("ERROR! You have not chosen a leap year.\nPlease try again.\n", year);
system("pause") ;
return 0;
}

thanks!

[ilikepython]

Hey there...i was wondering if someone can help me with my program. I'm doing the leap year program thing. i thought i had it all figured out, but it ALWAYS says that it's not a leap year. here's my code...if you can help i'd gladly appreciate it.
int year, test4, test100, test400;
printf("The amazing leap year teller thingie thing!!!\nPleas e enter the year to be tested: ");
scanf("year");
test4 = year%4;
test100 = year%100;
test400 = year%400;
if((test4 == 0 && test100 != 0) || test400 == 0)
printf("DING!! Leap Year");
else
printf("ERROR! You have not chosen a leap year.\nPlease try again.\n", year);
system("pause") ;
return 0;
}

thanks!

The problem is in your scanf call. You have "scanf("year"); ", that doesn't work. Scanf takes two arguements, the type of data, and the variable in which to store that data. For example in your case, try:

scanf("%d", year); //puts an integer in varibale "year"

[karafire2003]

i tried that...and now after entering a year the program crashes.
thanks the idea still :)

[ilikepython]

i tried that...and now after entering a year the program crashes.
thanks the idea still :)

Hm, that's wierd. I assume you're getting a segmentation fault? Can you post your full code here so we can see what's going on?

[karafire2003]

here's the whole thing.
# include <stdio.h>
int main()

{
int year, test4, test100, test400;
printf("The amazing leap year teller thingie thing!!!\nPleas e enter the year to be tested: ");
scanf("year");
test4 = year%4;
test100 = year%100;
test400 = year%400;
if((test4 == 0 && test100 != 0) || test400 == 0)
printf("DING!! Leap Year");
else
printf("ERROR! You have not chosen a leap year.\nPlease try again.\n", year);
system("pause") ;
return 0;
}

when i did what you recommended...t here were no complier errors or anything...the program runs, but after a 4 digit number is entered...it crashes.
thanks for your time...REALLY!! !

[ilikepython]

here's the whole thing.
# include <stdio.h>
int main()

{
int year, test4, test100, test400;
printf("The amazing leap year teller thingie thing!!!\nPleas e enter the year to be tested: ");
scanf("year");
test4 = year%4;
test100 = year%100;
test400 = year%400;
if((test4 == 0 && test100 != 0) || test400 == 0)
printf("DING!! Leap Year");
else
printf("ERROR! You have not chosen a leap year.\nPlease try again.\n", year);
system("pause") ;
return 0;
}

when i did what you recommended...t here were no complier errors or anything...the program runs, but after a 4 digit number is entered...it crashes.
thanks for your time...REALLY!! !

Ok, I got it:
Instead of "scanf("%d, year);" put "scanf("%d" , &year);".
You have to do this because scanf takes a pointer to a variable not just a regular variable.
I tried it and it works.

[karafire2003]

OH MYGOD...thank you SOOOOOOOOOOOOOO OO much.
how did you figure it out? that way i'll be able to figure it out later on my own. thanks again!!!

[ilikepython]

OH MYGOD...thank you SOOOOOOOOOOOOOO OO much.
how did you figure it out? that way i'll be able to figure it out later on my own. thanks again!!!

You are welcome.
I went to:

http://www.cplusplus.com/doc/tutorial

It is a good place to learn and go back to for reference (my case).
It also has a lot functions descriptions and how to use them. It's one of the best for C or C++.