sscanf c++ splitting string to ints sometimes doesn't work
c++, int, scanf, split, string
Solution
See `sscanf`
i Matches an optionally signed integer; the next pointer must be a pointer to int. The integer is read in base 16 if it begins with 0x or 0X, in base 8 if it begins with 0, and in base 10 otherwise. Only characters that correspond to the base are used.
`08` will be scanned as an octal integer, because it starts with `0`. But `08` is not a valid octal integer, whereas `07` is. If you use `%d` instead of `%i`, it will work as you expect.
sscanf("2011-03-08","%d %*[-] %d %*[-] %d", &y, &m, &d);
or even simpler
sscanf("2011-03-08","%d-%d-%d", &y, &m, &d);
Depending on what you want to do with the result, you may also consider `strptime`
strptime - convert a string representation of time to a time tm structure
struct tm t;
strptime("2011-03-08, "%Y-%m-%d", &t);
Problem
I am writing a program that converts a date string to three separate int variables: year, month, day. ``` int m,d,y; sscanf("2011-03-08","%i %*[-] %i %*[-] %i",&y,&m,&d); cout << y<<" "<<m<<" "<<" "<<d<<std::endl; sscanf("2011-03-07","%i %*[-] %i %*[-] %i",&y,&m,&d); cout << y<<" "<<m<<" "<<" "<<d; ``` If I convert 2011-03-08 or 2011-03-09, the day will be 0, but for 2011-03-07,06,... the day is 7,6,... as i would expect. Could somebody explain it, why doesn't it work for 08 or 09 and only for them? Thank you in advance!