## Aug 12, 2020

### C Program to Perform All Arithmetic Operations using Pointers

Ex: Write a C program to perform all arithmetic operations using pointers. How to write a C program to perform all arithmetic operations using pointers. C program to perform all arithmetic operations using pointers.

Input from user:

Enter Number1: 20

Enter Number2: 10

Expected output:

Sum=30

Subtraction=10

Multiplication=200

Division=2.0000

Before learning how to write a C program to perform all arithmetic operations we need to know what is arithmetic operators means.

## What is Arithmetic Operators:

Arithmetic Operators are the operators which are used to perform various mathematical operations such as addition, subtraction, division, multiplication etc.

For Examples:

### 4. Division Operator (/) : is denoted by  forward slash (/)  symbol and it divides first number by the second number like 35 / 5 = 7.

5. Modulus Operator (%) : is denoted by percentage (%) symbol and it returns remainder. for ex: 25 / 5 = 0, 45 / 6 = 3 etc.

In below example we have performed addition, subtraction, multiplication and division operations using pointers in C.

### Step by step logic of the given program:

1. Accept two numbers from user store it in variable say no1 and no2.

2. Store address of no1 in pointer variable ptr1 and store address of no2 in variable ptr2 using reference operator (&):

ptr1=&no1;

ptr2=&no2;

3. After that calculate addition, subtraction, multiplication and division using dereference operator(*):

sum=(*ptr1) + (*ptr2);

sub=(*ptr1) - (*ptr2);

mult=(*ptr1) * (*ptr2);

div=(*ptr1) / (*ptr2);

4. Last print sum, sub, mult and div on the output screen.

## C Program to Perform All Arithmetic Operations using Pointers:

#include<stdio.h>

int main()

{

int no1,no2;

int *ptr1,*ptr2;

int sum,sub,mult;

float div;

printf("Enter number1:\n");

scanf("%d",&no1);

printf("Enter number2:\n");

scanf("%d",&no2);

sum=(*ptr1) + (*ptr2);

sub=(*ptr1) - (*ptr2);

mult=(*ptr1) * (*ptr2);

div=(*ptr1) / (*ptr2);

printf("sum= %d\n",sum);

printf("subtraction= %d\n",sub);

printf("Multiplication= %d\n",mult);

printf("Division= %f\n",div);

return 0;

}

Above program shows the following output:

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