Compilare: user.cpp: In function ‘int main()’: user.cpp:23: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:4: warning: unused variable ‘T’ user.cpp:4: warning: unused variable ‘K’ user.cpp:23: warning: ‘S1’ may be used uninitialized in this function user.cpp:23: warning: ‘S2’ may be used uninitialized in this function user.cpp:24: warning: ‘S3’ may be used uninitialized in this function user.cpp:25: warning: ‘S4’ may be used uninitialized in this function user.cpp:4: warning: ‘Z’ may be used uninitialized in this function