make a function vector cmul which returns the product of a number c and a vector v of size n using an array. 4 (1, 2, 3) = (4, 8, 12) For example, v = (1, 2, 3) corresponds to int v[3]={1,2,3};. int * vector_cmul(int c,int v[], int n){ int *t=_________________; for(int i=0;i