Compilare: user.cpp: In function ‘int main()’: user.cpp:10:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&n,&m,&k); ^ user.cpp:12:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&r[i],&cost[i]); ^ user.cpp:27:19: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] vf[poz]=-1; ^