//Allocate: int **p = new int* [m]; for(int i = 0 ; i < m ; i++) p[i] = new int[n]; //Use: for(int i = 0 ; i < m; i++) for(int j = 0 ; j < n ; j++) p[i][j] = i * j; //Free: for(int i = 0 ; i < m ; i++) delete[] p[i]; delete[] p;
1. 演示形为int[2][3]的二维动态数组 /////////////////////////////////////////////////////////////////// int n1, n2; const int DIM1 = 2; const int DIM2 = 3; // 构造数组 int **ppi = new int*[DIM1]; for(n1 = 0; n1 < DIM1; n1++) { ppi[n1] = new int[DIM2]; } // 填充数据 for(n1 = 0; n1 < DIM1; n1++) { for(n2 = 0; n2 < DIM2; n2++) { ppi[n1][n2] = n1 * 10 + n2; } } // 输出 for(n1 = 0; n1 < DIM1; n1++) { for(n2 = 0; n2 < DIM2; n2++) { afxDump << "ppi[" << n1 << "][" << n2 << "] = " << ppi[n1][n2] << "\n"; } } // 释放数组 for(n1 = 0; n1 < DIM1; n1++) { delete [] ppi[n1]; } delete [] ppi;
2. 三维动态数组(int[2][3][4]) /////////////////////////////////////////////////////////////////// int n1, n2, n3; const int DIM1 = 2; const int DIM2 = 3; const int DIM3 = 4; // 构造数组 int ***ppi = new int**[DIM1]; for(n1 = 0; n1 < DIM1; n1++) { ppi[n1] = new int*[DIM2]; for(n2 = 0; n2 < DIM2; n2++) { ppi[n1][n2] = new int[DIM3]; } } // 填充数据 for(n1 = 0; n1 < DIM1; n1++) { for(n2 = 0; n2 < DIM2; n2++) { for(n3 = 0; n3 < DIM3; n3++) { ppi[n1][n2][n3] = n1 * 100 + n2 * 10 + n3; } } } // 输出 for(n1 = 0; n1 < DIM1; n1++) { for(n2 = 0; n2 < DIM2; n2++) { for(n3 = 0; n3 < DIM3; n3++) { afxDump << "ppi[" << n1 << "][" << n2 << "][" << n3 << "] = " << ppi[n1][n2][n3] << "\n"; } } } // 释放数组 for(n1 = 0; n1 < DIM1; n1++) { for(n2 = 0; n2 < DIM2; n2++) { delete [] ppi[n1][n2]; } delete [] ppi[n1]; } delete [] ppi;
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