Compilare: user.cpp: In function 'int ok(int, int)': user.cpp:27: warning: comparison between signed and unsigned integer expressions user.cpp:83: warning: comparison between signed and unsigned integer expressions user.cpp:103: warning: comparison between signed and unsigned integer expressions user.cpp:20: warning: unused variable 'ja' user.cpp:20: warning: unused variable 'jb' user.cpp:20: warning: unused variable 'mmic' user.cpp: In function 'void df(int)': user.cpp:164: warning: comparison between signed and unsigned integer expressions user.cpp:191: warning: comparison between signed and unsigned integer expressions user.cpp:194: warning: comparison between signed and unsigned integer expressions user.cpp:200: warning: comparison between signed and unsigned integer expressions user.cpp:204: warning: comparison between signed and unsigned integer expressions user.cpp:214: warning: comparison between signed and unsigned integer expressions user.cpp:243: warning: comparison between signed and unsigned integer expressions user.cpp:254: warning: comparison between signed and unsigned integer expressions user.cpp:260: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:307: warning: comparison between signed and unsigned integer expressions user.cpp:326: warning: comparison between signed and unsigned integer expressions