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C program to demonstrate example structure pointer (structure with pointer) using user define function

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mahmoud2506
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2022-05-04
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C program to demonstrate example structure pointer (structure with pointer) using user define function

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mahmoud2506
2022-05-04
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In this example, we have a structure named item with the pointer structure object named pItem, here we are implementing two user define functions readItem() - to read structure members and printItem() - to print the value of structure members.

/*C program to demonstrate example of structure pointer 
using user define function*/

#include <stdio.h>

struct item
{
	char  itemName[30];
	int qty;
	float price;
	float amount;
};

/*readItem()- to read values of item and calculate total amount*/
void readItem(struct item *i)
{
	/*read values using pointer*/
	printf("Enter product name: ");
	gets(i->itemName);
	printf("Enter price:");
	scanf("%f",&i->price);
	printf("Enter quantity: ");
	scanf("%d",&i->qty);
	
	/*calculate total amount of all quantity*/
	i->amount =(float)i->qty * i->price;
}

/*printItem() - to print values of item*/
void printItem(struct item *i)
{
	/*print item details*/
	printf("\nName: %s",i->itemName);
	printf("\nPrice: %f",i->price);
	printf("\nQuantity: %d",i->qty);
	printf("\nTotal Amount: %f",i->amount);

}
int main()
{
	
	struct item itm;	/*declare variable of structure item*/
	struct item *pItem;	/*declare pointer of structure item*/
	
	pItem = &itm;		/*pointer assignment - assigning address of itm to pItem*/
	/*read item*/
	readItem(pItem);
	/*print item*/
	printItem(pItem);
	
	
	return 0;
}

Output

Enter product name: Pen 
Enter price:5.50 
Enter quantity: 15 
 
Name: Pen 
Price: 5.500000 
Quantity: 15 
Total Amount: 82.500000

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