Compilare: user.cpp: In function 'int schimb(int, int)': user.cpp:13: warning: comparison between signed and unsigned integer expressions user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp:50: warning: format '%u' expects type 'unsigned int*', but argument 2 has type 'long long unsigned int*' user.cpp:50: warning: format '%u' expects type 'unsigned int*', but argument 3 has type 'long long unsigned int*' user.cpp:65: warning: statement has no effect user.cpp:71: warning: format '%u' expects type 'unsigned int', but argument 2 has type 'long long unsigned int'