/in/foo.cc: In function 'int main()':
/in/foo.cc:8:23: warning: iteration 45 invokes undefined behavior [-Waggressive-loop-optimizations]
    8 |                 fib[i]=fib[i-1]+fib[i-2];
      |                 ~~~~~~^~~~~~~~~~~~~~~~~~
/in/foo.cc:6:22: note: within this loop
    6 |         for(int i=3;i<=48;i++)
      |                     ~^~~~