Compilare: user.cpp: In function ‘int main()’: user.cpp:39:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&K); ^ user.cpp:43:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&T[i].val); ^ user.cpp:50:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=K;i++){fscanf(f,"%d",&Q[i].val);Q[i].pos=i;} ^