טיפול בקבצים יום רביעי, 1 בפברואר 2017

/*
#include <stdio.h>
void main() {
FILE *fp;
char str[200];
char ch1,ch2='A';
int num_of_char = 0;
int num_of_word = 0;

printf("Enter path:\n");
gets(str);  // tttrrr.txt
fp = fopen(str,"r");
if (fp == NULL){
printf("Can't open file\n");
exit(0);
}

while(!feof(fp)){
num_of_char ++;
ch1 = fgetc(fp);
if((ch1== ' ' || ch1== '\n' || ch1== '\t')&& (ch2!= ' ' && ch2!= '\n' && ch2!= '\t')&& num_of_char>1)
num_of_word ++;
if(!feof(fp))
ch2 = ch1;
}
fclose(fp);

if (ch2!= ' ' && ch2!= '\n' && ch2!= '\t'&& num_of_char>1){ // עבור המלה האחרונה
num_of_word++;
}

printf("num of characters: %d\n", num_of_char-1 );
printf("num of words:      %d\n", num_of_word );
}
*/

/*  // 2
#include <stdio.h>

void main(){
	char str[200],ch;
	FILE *fp;
	int n0=0,n1=0,n2=0,n3=0,n4=0,n5=0,n6=0,n7=0,n8=0,n9=0;
	printf("Enter path:\n");
	gets(str);  // tttrrr.txt
	fp = fopen(str,"r");
	if (fp == NULL){
		printf("Can't open file\n");
		exit(0);
	}

	while(!feof(fp)){
		ch = fgetc(fp);

		switch (ch){
		case '0':{ n0 ++; break;}
		case '1':{ n1 ++; break;}
		case '2':{ n2 ++; break;}
		case '3':{ n3 ++; break;}
		case '4':{ n4 ++; break;}
		case '5':{ n5 ++; break;}
		case '6':{ n6 ++; break;}
		case '7':{ n7 ++; break;}
		case '8':{ n8 ++; break;}
		case '9':{ n9 ++; break;}
		}
	}
	fclose(fp);
	printf("0:  %d\n1:  %d\n2:  %d\n3:  %d\n4:  %d\n5:  %d\n6:  %d\n7:  %d\n8:  %d\n9:  %d\n",n0,n1,n2,n3,n4,n5,n6,n7,n8,n9);
}
*/



#include <stdio.h>
#include<string.h>

struct Product{
	char Name[20];
	double Price;
	int Amount;
};


void main(){
	FILE *fp;
	char str[200],ch;
	char annoying;
	struct Product P;
	int count=0,amount1=0,sum=0;
	double price1=0,best_price = 0,price_of_all=0;
	char name[20],best_name[20];


	printf("Enter path:\n");
	gets(str);  // tttrrr.txt
	/*
	fp = fopen(str,"w");

	do{
		printf("Enter Product Name:  ");
		scanf("%s",P.Name);
		printf("Enter Price:  ");
		scanf("%lf",&P.Price);
		printf("Enter Amount  ");
		scanf("%d",&P.Amount);


		fprintf(fp,"%s\n%.2lf\n%d\n",P.Name,P.Price,P.Amount);




		printf("Enter 'y' to create a new product or 'n' to finish: ");
		flushall();
		annoying = getchar();

	while(annoying != 'n'&& annoying != 'N' && annoying != 'y' && annoying != 'Y'){
	printf("Please enter a legal input: ");
	flushall();
	annoying = getchar();
	}

	} while(annoying == 'y' || annoying == 'Y');

		fclose (fp);
		*/
		///////   עד כאן קלטנו



	fp = fopen(str,"r");   // tttrrr.txt
	while (!feof(fp)) {
		fgets(name,19,fp);
		fscanf(fp,"%lf",& price1);
		if (feof(fp)) break;   // למהההה
		amount1=0;   //  למהההההה
		fscanf(fp,"%d",& amount1);


		sum += amount1;
		price_of_all += (price1 * amount1);

		if (price1 >= best_price){
			best_price = price1;
			strcpy(best_name,name);
		}

	}

	printf("How many products:  %d\n",sum);
	printf("Price of all:       %.2lf\n",price_of_all);
	printf("The most expensive: %s\n",best_name);

	fclose (fp);
}