Compilare: user.cpp: In function ‘void lg_power(unsigned int, int (*)[4])’: user.cpp:28:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; (1 << i) <= P; i++) { ^ user.cpp: In function ‘int main()’: user.cpp:44:20: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(fin,"%d",&T); ^ user.cpp:44:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&T); ^ user.cpp:49:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d%u",&a,&b,&c,&N); ^