Compilare: user.cpp: In function ‘void reverse(int, int)’: user.cpp:11: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘void sort_xx(int, int)’: user.cpp:18: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘void sort_it(int, int)’: user.cpp:28: warning: suggest parentheses around ‘+’ inside ‘>>’ user.cpp: In function ‘int main()’: user.cpp:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result