?? xindexx.c
字號:
/* Driver for routine indexx */
#include <stdio.h>
#include "nr.h"
#include "nrutil.h"
#define NP 100
#define MAXSTR 80
main()
{
char txt[MAXSTR];
unsigned long i,j,*indx;
float *a;
FILE *fp;
indx=lvector(1,NP);
a=vector(1,NP);
if ((fp = fopen("tarray.dat","r")) == NULL)
nrerror("Data file tarray.dat not found\n");
fgets(txt,MAXSTR,fp);
for (i=1;i<=NP;i++) fscanf(fp,"%f",&a[i]);
fclose(fp);
indexx(NP,a,indx);
printf("\noriginal array:\n");
for (i=0;i<=9;i++) {
for (j=1;j<=10;j++) printf("%7.2f",a[10*i+j]);
printf("\n");
}
printf("\nsorted array:\n");
for (i=0;i<=9;i++) {
for (j=1;j<=10;j++) printf("%7.2f",a[indx[10*i+j]]);
printf("\n");
}
free_vector(a,1,NP);
free_lvector(indx,1,NP);
return 0;
}
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