#include<stdio.h>
#include<stdlib.h>
#include<stddef.h>
#include<string.h>
#include<math.h>
typedef struct All{ 
    float mass,x,y,z,vx,vy,vz;
    float spin,sigv,q,s; 
/* spin is the halo spin. Some halos can have negative values */
/* sigv is the halo velocity dispersion */
/* and q,s is the radius ratio of intermediat and minor to major */
    float angmom[3],v[3][3];
/* angmom[3] is the angular momentum vector of the halo */
/* v[3][0] directional cosine of the major, */
/* v[3][1] directional cosine of the intermediate, and */
/* v[3][2] directional cosine of the minor axis */
} All;
All *array; 



int main(int argc, char **argv){
	int np;
	FILE *fp;

	fp = fopen(argv[1],"r");
	fread(&np,sizeof(int),1,fp);
   	array = (All *)malloc(sizeof(All)*np);
	fread(array,sizeof(All),np,fp);
	fclose(fp);

}