Compilare: user.cpp: In function ‘int p3(int)’: user.cpp:12: warning: array subscript has type ‘char’ user.cpp:8: warning: unused variable ‘i’ user.cpp: In function ‘long long int p5(int)’: user.cpp:24: warning: array subscript has type ‘char’ user.cpp:19: warning: unused variable ‘i’ user.cpp: In function ‘int main()’: user.cpp:67: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long int’ user.cpp:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result