Compilare: user.cpp: In function ‘int prim(long long unsigned int)’: user.cpp:17: warning: ‘P’ is used uninitialized in this function user.cpp:17: warning: ‘q’ is used uninitialized in this function user.cpp: In function ‘void schimb()’: user.cpp:23: warning: ‘n2’ is used uninitialized in this function user.cpp: In function ‘long long int verific(long long int)’: user.cpp:31: warning: ‘fr1’ is used uninitialized in this function user.cpp: In function ‘int main()’: user.cpp:47: warning: ‘c1’ may be used uninitialized in this function