Compilare: user.cpp: In function ‘int search(int)’: user.cpp:9:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=liste[x%MOD];j!=0 && h[j]!=x;j=next[j]); ^ user.cpp: In function ‘long long int query(int)’: user.cpp:16:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++){ ^ user.cpp:30:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<n){ ^ user.cpp: In function ‘int main()’: user.cpp:43:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++){ ^ user.cpp:41:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d%d", &n, &l, &u); ^ user.cpp:44:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &x); ^