c语言文件操作出错，求指点
程序代码：#include<stdio.h>
#include<time.h>
#include<string.h>
#include <stdlib.h>
///////////////////
const int v_max = 5;
const double randomization = 0.3;
const int road_length = 500;
int v[2][600];
///////////////////////////////////
int lead[10];
int last[10];
const int car_num = 100;
int total_node_num, total_road_num, total_car_num, road_num, lattice, sample, time_run;
int rand_int()
{
int seed;
seed = rand() % 501; //make a num 0-100;
return seed;
}
//////////产生随机中子数，范围在0-1之间
double rand_double()
{
return ((double)rand_int() / 100);
}
void add_car()
{
if (rand_int() % 2 == 1)
{
if (last[0] > 0)
v[0][0] = v_max;
}
else
{
if (last[1] > 0)
v[1][0] = v_max;
}
//return 0;
printf("尾车=%2d\n", last[0]);
//getchar();
}
void inicars()
{
FILE *ff;
ff = fopen("初始化.txt", "w");
int temp_1, i, j;
for (i = 0; i<2; i++)
for (j = 0; j<road_length; j++)
{
v[i][j] = -1;
}
///////////////
for (i = 0; i < 2; i++)
{
for (j = 0; j < car_num;)
{
temp_1 = rand_int() % road_length;
if (v[i][temp_1] < 0)
{
v[i][temp_1] = rand_int() % (v_max + 1);
j++;
fprintf(ff, "道路=%2d,weizhi=%2d,sudu=%2d\n", i, temp_1, v[i][temp_1]);
}
}
}
printf("1");
//getchar();
}
void update_lattice()
{
//ofstream Vfile("V_1.txt", ios::app);
FILE *fp;
fp = fopen("wz_1.txt", "a");
int temp_1, temp_2, temp_3;
for (road_num = 0; road_num < 2; road_num++)
{
for (lattice = last[road_num]; lattice <= lead[road_num]; lattice++)
{
if (v[road_num][lattice] >= 0)//////////////
{
if (v[road_num][lattice] < v_max)
{
v[road_num][lattice]++;
}
if (lattice < lead[road_num])
{
for (temp_1 = 1; temp_1 <= v_max; temp_1++) /
{
if (v[road_num][lattice + temp_1] >= 0 )
{
v[road_num][lattice] = temp_1 - 1; break;
}
}
}
else if (lattice == lead[road_num])
{
if (v[road_num][lattice] >= road_length - lattice - 1)
{
v[road_num][lattice] = -1; //
}
}
if (rand_double() < randomization && v[road_num][lattice] > 0)
{
v[road_num][lattice]--;
}
//////////////////////////////
}
///////////////////////////////////////////////
if (v[road_num][lattice] >= 0)
{
temp_2 = lattice + v[road_num][lattice];
if (temp_2 < road_length)
{
v[road_num][temp_2] = v[road_num][lattice];
v[road_num][lattice] = -1;
}
else
{
v[road_num][lattice] = -1;
}
if (road_num == 0)
fprintf(fp, "道路：%2d,位置=%2d\n", road_num, lattice);
// Vfile << road_num << " " << lattice << endl;
}
}
fputs("\n", fp);
}
//Vfile.close();
fclose(fp);
//return 0;
}
void main()
{
srand(time(NULL));
int time_count;
inicars();
FILE *p;
p = fopen("时间.txt", "w");
for (time_count = 0; time_count < 1000; time_count++)
{
for (road_num = 0; road_num < 2; road_num++)
{
for (lattice = 0; lattice < road_length; lattice++)
{
if (v[road_num][lattice] >= 0)
last[road_num] = lattice; break;
}
}
///////////////
for (road_num = 0; road_num < 2; road_num++) ////////////////
for (lattice = road_length - 1; lattice > -1; lattice--)
{
if (v[road_num][lattice] >= 0)
{
lead[road_num] = lattice; break;
}
}
///////////////////////////////////////
add_car();
update_lattice();
fprintf(p, "time=%2d\n", time_count);
printf("%d\n", time_count);
}
fclose(p);
printf("ok");
}出错的地方在fprintf(fp, "道路：%2d,位置=%2d\n", road_num, lattice);
// Vfile << road_num << " " << lattice << endl;
}
}
fputs("\n", fp);
}
这里为什么只循环了一次，按正确的想法是一个时间步有100个数据，总共有1000*100个数据，，，，，，， 但是输出的文件只有100个，我命名文件操作类型是追加型fp = fopen("wz_1.txt", "a");为什么还是出错，求大神指点一下，小弟不胜感激。。。。。。。
