怎么动态生成不定长度的数组

如何动态生成不定长度的数组

C/C++ code

class Gobang {public:    Gobang(unsigned short int r, unsigned short c):row(r),column(c){        _init_board();    }private:    void _init_board() {        for(int i=0; i<row; i++) {            for(int s=0; s<column; s++) {            }        }    }    const unsigned short int row;    const unsigned short int column;    unsigned short int **board;};Gobang g(8,8);

C/C++ code

//在堆中开辟一个4×5的二维int数组#include <stdio.h>#include <malloc.h>int **p;int i,j;void main() {    p=(int **)malloc(4*sizeof(int *));    if (NULL==p) return;    for (i=0;i<4;i++) {        p[i]=(int *)malloc(5*sizeof(int));        if (NULL==p[i]) return;    }    for (i=0;i<4;i++) {        for (j=0;j<5;j++) {            p[i][j]=i*5+j;        }    }    for (i=0;i<4;i++) {        for (j=0;j<5;j++) {            printf(" %2d",p[i][j]);        }        printf("\n");    }    for (i=0;i<4;i++) {        free(p[i]);    }    free(p);}//  0  1  2  3  4//  5  6  7  8  9// 10 11 12 13 14// 15 16 17 18 19
[解决办法]
C/C++ code
//在堆中开辟一个4×5的二维int数组#include <stdio.h>#include <malloc.h>int **p;int i,j;void main() {    p=(int **)malloc(4*sizeof(int *));    if (NULL==p) return;    for (i=0;i<4;i++) {        p[i]=(int *)malloc(5*sizeof(int));        if (NULL==p[i]) return;    }    for (i=0;i<4;i++) {        for (j=0;j<5;j++) {            p[i][j]=i*5+j;        }    }    for (i=0;i<4;i++) {        for (j=0;j<5;j++) {            printf(" %2d",p[i][j]);        }        printf("\n");    }    for (i=0;i<4;i++) {        free(p[i]);    }    free(p);}//  0  1  2  3  4//  5  6  7  8  9// 10 11 12 13 14// 15 16 17 18 19