How to set the width of the format specifier for a variable type char array in C? -


i have function --

bool datapersistence::persistuidetails (const char *data, quint32 len) {   tlog_func_enter();   bool retval = true;    char tmp[len+1];   strncpy (tmp, data, len);    //working on persisting ui details.   char type[len];   char uivers[len];   char mwvers[len];   char ts[len];    sscanf (tmp, "%s %s %s %s", type, uivers, mwvers, ts);  }

i want put maximum width format specifier. how can in c?

something %255s

use sprintf print format string:

char formatstring[256]; sprintf(formatstring, "%%%ds %%%ds %%%ds %%%ds", len, len, len, len);

then use in sscanf:

sscanf (tmp, formatstring, type, uivers, mwvers, ts);

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