【cpp】new delete

double *M = new double[2*num];
double *T = new double[2 * num];
double *activeM = new double[2 * num];
double *activeT = new double[2 * num];
double *A = new double[2 * num];

delete[] A;
delete[] activeT;
delete[] activeM;
delete[] T;
delete[] M;

注意：

（1）对数组要 delete[]

（2）注意delete的顺序，和new是反过来的。