compute-avg-good.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 time1;
	float time2;
	float time3;
  float ratio;
  
	float good1;
	float good2;
	float good3;
	ratio = 0.0;
	good2 =0.0;
  good1 =0.0;
	good3 =0.0;
  if (argc != 3) {
    //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], "w"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
 
	fscanf(df1, "%f%f\n", &time1, &good1);
	fprintf(df2,"%f\t%f\n",time1,good1);
	while (!feof(df1)) {

		fscanf(df1, "%f%f\n", &time1, &good1);
		
		fscanf(df1, "%f%f\n", &time2, &good2);
		fscanf(df1, "%f%f\n", &time3, &good3);
		ratio = ((good1 +good2 +good3 )/ 3.0);
		fprintf(df2,"%f\t%f\n",time3, ratio);
		
  } 
  
	
  fclose(df1);
  fclose(df2);
}