#include <stdio.h>

main()
{
 float foco;
 char s[200];
 
 FILE *in;
 
 in = fopen("param.parms", "r");
 
 fgets(s, 254, in);
 fgets(s, 254, in);
 fgets(s, 254, in);
 
 
 fscanf(in,"fo = %f\n",&foco);
 
 printf(" foco = %f \n",foco);
 
}