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我想要實現一個簡單的N體仿真,並管理所有我想使用鏈表的相互作用來計算鄰居之間的交互。這是代碼:分配一個包含3d鏈接列表的結構
#include <stdio.h>
#include <stdlib.h>
#define V 20
#define N_P 100
typedef struct _node{
int id;
struct _node *next;
} node;
typedef struct _particle{
double r[3];
node* n;
int coor[3];
} particle;
typedef struct _simulation_struct{
int N;
particle *system;
double L[3];
double s[3];
int nc[3];
node*** cell;
} simulation_struct;
simulation_struct *new_simulation(int N, double Lx, double Ly,double Lz,double R);
int main()
{
simulation_struct *simulation=new_simulation(N_P,V,V,V,2);
return 0;
}
simulation_struct *new_simulation(int N, double Lx, double Ly, double Lz,double R)
{
simulation_struct *simulation;
int i, j,k;
simulation =(simulation_struct*) malloc(1*sizeof(simulation));
simulation->N = N;
simulation->L[0] = Lx;
simulation->L[1] = Ly;
simulation->L[2] = Lz;
simulation->nc[0] = (int) (Lx/R)+1;
simulation->nc[1] = (int) (Lx/R)+1;
simulation->nc[2] = (int) (Lx/R)+1;
simulation->s[0] = Lx/simulation->nc[0];
simulation->s[1] = Ly/simulation->nc[1];
simulation->s[2] = Lz/simulation->nc[2];
simulation->system = (particle*)malloc(N*sizeof(particle));
simulation->cell =(node***) malloc ((simulation->nc[0])*sizeof(node **));
for (i=0; i < simulation->nc[0]; i++)
{
simulation->cell[i] = (node**)malloc((simulation >nc[1])*sizeof(node*));
for (j=0; j < simulation->nc[1];j++)
{
simulation->cell[i][j] = (node*)malloc((simulation->nc[2])*sizeof(node));
for (k=0; k < simulation->nc[2];k++)
{
simulation->cell[i][j][k].id = -1;
simulation->cell[i][j][k].next = NULL;
}
}
}
for (i=0; i < simulation->nc[0]; i++)
{
simulation->system[i].n = (node*)malloc(1*sizeof(node));
simulation->system[i].n->id = i;
}
return simulation;
}
我可以編譯它,如果參數V和N_P小(例如V = 10 N_P = 20)中的程序工作正常,但如果參數中稍大一點時,我執行程序,我發現一個分段錯誤錯誤。有人告訴我我做錯了什麼嗎?
在此先感謝!
typpo here:'simulation> nc [1]' –
僅供您參考,被稱爲[三星程序員](http://c2.com/cgi/wiki?ThreeStarProgrammer)通常不是*讚美。 –
Do * NOT *施放'malloc'的返回值,這是不必要的。請參閱:[**我是否將malloc的結果?**](http://stackoverflow.com/q/605845/995714)進行了詳細說明。 –