Compilare: user.cpp: In function ‘void cit()’: user.cpp:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q=1;q<n;q++) ^ user.cpp:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp: In function ‘void pd2(unsigned int)’: user.cpp:38:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=a[rad][0];i++) ^ user.cpp:43:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=a[rad][0];i++) ^ user.cpp: In function ‘int main()’: user.cpp:85:24: warning: unused variable ‘j’ [-Wunused-variable] unsigned int i,s=0,j; ^ user.cpp: In function ‘void cit()’: user.cpp:20:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%u %u",&n,&k); ^ user.cpp:23:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&i,&j); ^