Compilare: main.cpp: In function 'int main()': main.cpp:19:43: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] return ceil( 0.5 + sqrt(1.0 + 4.0 * d / a) / 2 ); ~~~~~~~~^~~ main.cpp:37:23: note: 'ans' was declared here double st, dr, mid, ans, timp_inital; ^~~ main.cpp:53:16: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] mid = ( st + dr ) / 2; ~~~~~^~~~~~