Compilare: user.cpp: In function ‘int main()’: user.cpp:19:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&N,&D); ^ user.cpp:20:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=N; ++i) {fscanf(fin,"%d%d",&A[i].Lg,&A[i].Cul); K=max(K,A[i].Cul);} ^ user.cpp:21:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=N; ++i) {fscanf(fin,"%d%d",&B[i].Lg,&B[i].Cul); K=max(K,B[i].Cul);} ^