Compilare: user.cpp: In function ‘int main()’: user.cpp:15:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d%*c", &N, &K ); ^ user.cpp:16:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%s", s+1 ); ^ user.cpp:29:17: warning: ‘dif’ may be used uninitialized in this function [-Wmaybe-uninitialized] K -= dif; ^ user.cpp:28:20: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] ind = poz+1; ^