Compilare: main.cpp: In function 'int main()': main.cpp:39:18: warning: operation on 'index' may be undefined [-Wsequence-point] 39 | fib[index++] = fib[index++] = 1; | ~~~~~^~ main.cpp:45:22: warning: operation on 'index' may be undefined [-Wsequence-point] 45 | fib[index++] = fib[index - 1] + fib[index - 2]; | ~~~~~^~ main.cpp:45:22: warning: operation on 'index' may be undefined [-Wsequence-point] main.cpp:45:22: warning: operation on 'index' may be undefined [-Wsequence-point] main.cpp:45:22: warning: operation on 'index' may be undefined [-Wsequence-point]