Compilare: main.cpp: In function 'long long int gcd(long long int, long long int)': main.cpp:20:9: warning: unused variable 'x' [-Wunused-variable] int x=max(a, b), y=min(a, b); ^ main.cpp:20:22: warning: unused variable 'y' [-Wunused-variable] int x=max(a, b), y=min(a, b); ^ main.cpp: In function 'int32_t main()': main.cpp:30:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("copaci.in", "r", stdin); ^ main.cpp:31:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("copaci.out", "w", stdout); ^