Compilare: user.cpp: In function ‘int main()’: user.cpp:21:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=n;++i)if(max<d1s[i])max=d1s[i]; ^ user.cpp:22:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=n;++i)if(max<d1d[i])max=d1d[i]; ^ user.cpp:23:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=n;++i)if(max<d2s[i])max=d2s[i]; ^ user.cpp:24:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=n;++i)if(max<d2d[i])max=d2d[i]; ^ user.cpp:12:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%hd",&n); ^ user.cpp:15:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&x); ^