Features of scanf: Assume we have: char a[100]; To read a string: scanf(%[^\n]\n, a); // it means read until you meet \n, then trash that \n To read till a coma: scanf(%[^,], a); // this one doesnt trash the coma scanf(%[^,],,a); // this one trashes the coma If you want to skip some input, use * sign after %. For example you want to read last name from John Smith : scanf(%s %s, temp, last_name); // typical answer, using 1 temporary variable scanf(%s, last_name); scanf(%s, last_name); // another answer, only use 1 variable, but calls scanf twice scanf(%*s %s, last); // best answer, because you dont need extra temporary variable nor calling scanf twice By the way, you should be very careful with using scanf because of the potential to overflow your input buffer! Generally you should consider using fgets and sscanf rather than just scanf itself, using fgets to read in a line and then sscanf to parse that line as demonstrated above.
Posted on: Thu, 18 Sep 2014 16:35:57 +0000
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