CODEWITHSUNDEEP
cstringsplit
speedyTeh
speedyTeh

Reputation: 257

Splitting string with token

I am trying to delete .txt extension from filename that is written in string "mat":

sscanf(mat, "%s.txt", ime_datoteke);

If mat="sm04567890.txt" I want that ime_datoteke="sm04567890". As in example I tried using sscanf, but it doesnt work (it copies mat to ime_datoteke).

How can I do it in C?

Upvotes: 0

Views: 102

Answers (4)

ouah
ouah

Reputation: 145839

With the Standard C function strstr:

char a[] ="sm04567890.txt";
char *b = strstr(a, ".txt");
*b = '\0';
printf("%s\n", a);

will print:

sm04567890

Upvotes: 0

Unsigned
Unsigned

Reputation: 9916

This example uses strrchr() to locate the last period in the string, and then copies only the part of the string that preceeds that period.

If no period is found, the entire string is copied.

const char *fullstop;

if ((fullstop = strrchr(mat, '.')))
    strncpy(ime_datoteke, mat, fullstop - mat);
else
    strcpy(ime_datoteke, mat);

Upvotes: 1

gliderkite
gliderkite

Reputation: 8928

Use strrchr:

char* pch = strrchr(str,'.');

if(pch)
   *pch = '\0';

Upvotes: 1

K-ballo
K-ballo

Reputation: 81349

You could modify your sscanf approach slightly to read a string that does not include a .:

sscanf(mat, "%[^.].txt", ime_datoteke);

However, it would be best if you look for the . character from the end of the string, and then copy the substring determined by it.

char* dot = strrchr(mat, '.');
strncpy(ime_datoteke, mat, dot - mat);

Upvotes: 1

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