CODEWITHSUNDEEP
cstringsubtraction
Andrea Gottardi
Andrea Gottardi

Reputation: 357

C - subtracting a string from another

Using ftw() function, I have a list of paths I want to write on a file. I need only paths starting from a specified folder, like: 

source folder: /Users/me
subfolder1:    /Users/me/school
subfolder2:    /Users/me/school/english

result I need: /school  
               /school/english

Is there a way to "subtract" one string from another, in the way i explained above? I know there is strtok()function, but i don't know if it works with more than one char at a time.

Thanks.

Upvotes: 1

Views: 2561

Answers (1)

jop
jop

Reputation: 2316

If you are sure that the prefix is there, just skip it:

char *result = subfolder + strlen(source);

Upvotes: 3

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