RCDFVarNumZ

Syntax

int RCDFVarNumZ(CDFid id);

Header

analysis/rcdf.h

Library

rcdf

Description

The RCDFVarNumZ function determines the number of Z variables in the open CDF file identified by the argument id.

Returns

Returns the number of variables on success. On error, a (-1) is returned.

Errors

On error, a (-1) is returned.

Example

Source Code: RCDFVarNumZ.c

/* RCDFVarNumZ.c
   =============
   Author: R.J.Barnes
*/


#include <stdio.h>
#include <stdlib.h>
#include <cdf.h>
#include "rcdf.h"


int main(int argc,char *argv[]) {

  CDFid id;
  CDFstatus status;
  int num;

  fprintf(stdout,"RCDFVarNumZ'n");
  if (argc==1) {
    fprintf(stderr,"No filename.'n");
    exit(-1);
  } 

  status=CDFopen(argv[1],&id);
  if (status !=CDF_OK) {
     fprintf(stderr,"Could not open cdf file.'n");
     exit(-1);
  }

  num=RCDFVarNumZ(id);

  CDFclose(id);
  
  fprintf(stdout,"Z var num. :%d'n",num);

  return 0;
}