CODEWITHSUNDEEP
cparsingscanf
Arrigo Pierotti
Arrigo Pierotti

Reputation: 203

reading a date with sscanf

I've got to read a date format (dd-mm-yyyy;) from a char* string using sscanf with this line of code:

sscanf(string, "%[^-]-%[^-]-%[^;];", day, month, year)

where day/month/year are char* string of 3/3/5 elemets each.

In this way it works but when i try to use day/moth/year as integer variables (with same sscanf), I got a 0 0 0 value when i use printf on them. If i change sscanf to

sscanf(string, "%d-%d-%d;", day, month, year)

I got segmentation fault.

Anyone can help me? Using K&R book, I didn't find a solution.

Upvotes: 3

Views: 10955

Answers (1)

hmjd
hmjd

Reputation: 121971

You need to pass the address of the int variables:

int day, month, year;
sscanf(string, "%d-%d-%d;", &day, &month, &year);

sscanf() returns the number of assignments made, recommend checking the return value before using day, month and year:

if (3 == sscanf(string, "%d-%d-%d;", &day, &month, &year))
{
}

Upvotes: 8

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