Compilare: main.cpp: In function 'void mergeSort(long int*, long int, long int)': main.cpp:96:13: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] x[i]=v[i]; ~~~~^~~~~ main.cpp:100:23: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] mergeSort(y,m+1,e); ^ main.cpp: In function 'int main()': main.cpp:105:11: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized] long *v,n; ^