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Homework 2/Homework2.c

+#include <stdio.h>
+#include <string.h>
+float NewPrice(float x, float y, int z, int k);
+//declaring a function NewPrice type float
+void Manufacturer(char company[]);
+//declaring a function Manufacturer type void
+void Input(int size, char company[size][15], float price[size]);
+//declaring a function Input type void
+float Discount();
+//declaring a function Discount type float
+int main(){
+	int i, size = 0;
+	//declaring variables i and size type integer
+	float discount = 61;
+	//declaring variable discount which is equals 61 type integer
+	
+	do{
+	puts("Input number of the companies (not less than 1 and not more than 15)");
+	scanf("%d", &size);
+	}while(size < 1 || size > 15);
+	//do while loop
+	//program will start this loop because value of size is in the range of while statement
+	//program print text and user will input a value of size until size will not be in the range
+	 
+	char company[size][15];
+	//declaring 2D array company type char
+	float price[size];
+	//declaring array price type float
+	
+	Input(size, company, price);
+	discount = Discount();
+	//these lines are working like a links to the functions
+	
+	puts("\nOld price");
+	puts("\nManufacturer\tPrice");
+	//program just print Old price then Manufacturer on next line an Price in next coloumn
+	
+	for(i = 0; i < size; i++){
+		Manufacturer(company[i]);
+		NewPrice(price[i], discount, size, 1);
+	}
+	//for loop which is working until i < size
+	//I have here 1 because I have if statement in the function
+	//there are two function links in the loop
+	//so when first function will be done program will go to next link
+	
+	puts("\nNew price");
+	puts("\nManufacturer\tPrice");
+	//program just print New price then Manufacturer on next line an Price in next coloumn
+	
+	for(i = 0; i < size; i++){
+		Manufacturer(company[i]);
+		NewPrice(price[i], discount, size, 0);
+	}
+	//for loop which is working until i < size
+	//I have here 0 because I have if statement in the function 
+	//there are two function links in the loop
+	//so when first function will be done program will go to next link
+	return 0;
+}
+float NewPrice(float x, float y, int z, int k){
+	//function New price
+	int i;
+	//declaring variable i type integer
+	float Price;
+	//declaring variable Price type float
+	if(k == 0){
+	//if statement which is working because of the constant k
+		for(i = 0; i < z; i++){
+			Price = x * (1 - (y / 100));
+		}
+	//for loop which is working util i < z
+	//there is only one formula for calculating new price in the loop
+		printf("\t%.1f\n", Price);
+	//program prints new price 
+	}
+	else {
+		printf("\t%.1f\n", x);
+	}
+	//else if k is not equal to 0 program prints x 
+	return Price;
+	//program returns Price into main function
+}
+void Manufacturer(char company[]){
+	//function Manufacturer
+	printf("%-13s", company);
+	//program will print company in the first 13 cells and align it to the left side
+}
+
+void Input(int size, char company[size][15], float price[size]){
+	//function Input
+	int i;
+	//declaring variable i type integer
+	for(i = 0; i < size; i ++){
+	//for loop which is working util i < size
+		printf("Input name of the company #%d\n", i+1);
+	//program prints text and i+1
+		scanf("%s", company[i]);
+	//user input string company
+		do{
+	//do while loop which is working untill price[i] < 0
+		puts("Input price not less than 0");
+	//program prints text
+		scanf("%f", &price[i]);
+	//user input price[i]
+		}while(price[i] < 0);
+	}
+}
+float Discount(){
+	//function Discount
+	float discount;
+	//declaring variable discount type float
+	do{
+	//do while loop which is working untill discount will be out of range
+		puts("Input price not less than 0");
+	//program prints text
+		puts("Input discount in percentages (between 10 and 60)");
+	//program prints text
+		scanf("%f", &discount);
+	//user input discount
+	}while(discount > 60 || discount < 10);
+	return discount;
+	//program return discount to the main function
+}
+		
+	
+	
+	
+