Compilare: main.cpp: In function 'long long int gcd(long long int, long long int)': main.cpp:9:7: warning: 'r' is used uninitialized in this function [-Wuninitialized] 9 | while(r){ | ^ main.cpp: In function 'int main()': main.cpp:9:7: warning: 'r' is used uninitialized in this function [-Wuninitialized] 9 | while(r){ | ^ main.cpp:8:4: note: 'r' was declared here 8 | ll r; | ^