ingilizcesi ve iyi c bilen varsa yardım aranıyor

 
  #include <stdio.h> 
  struct person 
  { 
  int personId; 
  double height; 
  double weight; 
  double BMI; 
  };  
   
  int calculate (struct person p) 
  { 
      return p.weight/(p.height*p.height); 
  }  
  void write () { 
  	FILE *file; 
  	struct person p1; 
  	file = fopen("bmi.txt","w"); 
  	if (file == NULL) 
  	{ 
  		printf("Error"); 
  	} 
  	else 
  	{ 
  		printf("Person ID: "); scanf("%d",&p1.personId); 
  		printf("Height: "); scanf("%lf",&p1.height); 
  		printf("Weight: "); scanf("%lf",&p1.weight); 
          p1.BMI=calculate(p1); 
  		fwrite(&p1,sizeof(p1),1,file); 
  		 
  	} 
  	fclose(file); 
  } 
   
  void read() { 
  	FILE *file; 
  	struct person p1; 
  	file = fopen("bmi.txt","r"); 
  	if (file == NULL) 
  	{ 
  		printf("Error"); 
  	} 
  	else 
  	{ 
  		while (!feof(file)) 
  		{ 
  			fread(&p1,sizeof(p1),1,file); 
  			printf("Person ID: %d\n",p1.personId); 
  			printf("Height: %f\n",p1.height); 
  			printf("Weight: %f\n",p1.weight); 
  			printf ("BMI: %f\n",p1.BMI); 
  		} 
  	} 
  	fclose(file); 
  } 
   
  int main () { 
  	write(); 
  	read(); 
  }