C语言中动态二维数组的创建

int** adjacentMatrix;adjacentMatrix = (int**)malloc(sizeof(int*) * (network_size + 1));if( !adjacentMatrix ){printf("malloc main is error!");exit(0);}int i;for( i = 1; i <= network_size; i++ ){adjacentMatrix[i] = (int*)malloc(sizeof(int) * (network_size + 1));if( !adjacentMatrix[i] ){printf("malloc %d is error!\n", i);exit(0);}}