Compilare: user.cpp: In function ‘int main()’: user.cpp:18:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;i<n;i++) ^ user.cpp:35:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=n;i<m;i++) ^ user.cpp:47:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=nr;i++) printf("%d ",v[i]); ^ user.cpp:15:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s",s1,s2); ^