compute-diff-goodput.c

对IEEE 802.11e里的分布式信道接入算法EDCA进行改进

#include <stdio.h>
#include <stdlib.h>



/* Compute the maximum between the number in  
 * the second column                 
 * 
 * Input:
 *   src1, src2 - two columns files
 *
 *   res - two column file
 */

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

  FILE *df1, *df2,*df3 ;
  
	float nodes;
	
  float ratio;
  
	float good1;
	float good2;
	
	ratio = 0.0;
	good2 =0.0;
  good1 =0.0;
  if (argc != 4) {
    //printf("Ussage: %s srcfile nflows \n", argv[0]);
    exit(-1);
  }
 
 if (!(df1 = fopen (argv[1], "r"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
	if (!(df2 = fopen (argv[2], "r"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
  if (!(df3 = fopen (argv[3], "w"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
	//nflows=atoi(argv[2]);
	
	while ((!feof(df1)) && (!feof(df2))) {

		fscanf(df1, "%f%f\n", &nodes, &good1);
		
		fscanf(df2, "%f%f\n", &nodes, &good2);
		
		ratio = ((good1 / good2) - 1.0) * 100.0;
		
		fprintf(df3,"%f\t%f\n",nodes,ratio);
		
  } 
  
	
  fclose(df1);
  fclose(df2);
  fclose(df3);
}