Compilare: user.cpp: In function ‘int main()’: user.cpp:18:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%i",&n); ^ user.cpp:20:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%i%i%i%i",&a,&b,&p,&q); ^ user.cpp:33:8: warning: ‘noSegments’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out,"%i",noSegments*2); ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~