2D数组的尺寸超过700x700时C程序崩溃

Question

编写C程序以生成的2D随机数组，以表示无向图的邻接矩阵，

当V小于或等于700时，效果很好

一旦超过，它将在运行时崩溃

任何具体原因？可以进行任何修改以使其可能生成更大的矩阵吗？

#include <stdio.h> 
#include <stdlib.h>
#define V 700
int main(){

    //CREATE FILE
    char v[4] = {'7','0','0','\0'};

    FILE *fPointer;

    fPointer = fopen ("adjMatrix.txt","w");
    fprintf(fPointer,v);
    fclose(fPointer);


    int graph[V][V];

    int i;
    int j;

    for (i=0;i<V;i++)
    {
        for(j=0;j<V;j++)
        {
            if(i==j)
            {
                graph[i][j] = 0;
            }
            else
            {
                graph[i][j] = rand()%10;
                graph[j][i] = graph[i][j] ;
            }
        }
    }


    //append file
    fPointer = fopen ("adjMatrix.txt","a");

    for (i=0;i<V;i++)
    {
        fprintf(fPointer,"\n");
        for(j=0;j<V;j++)
        {
            fprintf(fPointer,"%d ",graph[i][j]);
        }
    }


    fclose(fPointer);
    return 0;

}