Compilare: main.cpp: In function 'int main()': main.cpp:37:25: warning: 'x' is used uninitialized in this function [-Wuninitialized] 37 | int n,m,i,x,sqrtx,k,d=x; | ^ main.cpp: In function 'int closest(std::vector<int>, int)': main.cpp:24:12: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized] 24 | return k; | ^ main.cpp: In function 'int main()': main.cpp:53:21: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized] 53 | int dx=x0-x; | ^~