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。