Question

Write a program that declares an initializes two variables a & b with the values your choice, use pointer to those variables

and perform, addition, subtraction and multiplication: Print the results.

Answer 1

#include <stdio.h>
int main()
{
//declaration of two variables and pointers to those variables
int firstnum, secondnum, *p, *q;
int sum, sub, mul;
  
printf("Enter the value of first number:\n");
scanf("%d", &firstnum);
printf("Enter the value of second number:\n");
scanf("%d", &secondnum);
  
p = &firstnum;
q = &secondnum;
  
//perform Addition, Subtraction and Multiplication
sum = *p + *q;
sub = *p - *q;
mul = *p * *q;
  
//print the results
printf("Addition: Addition of entered numbers = %d\n",sum);
printf("Subtraction: Subtraction of entered numbers = %d\n",sub);
printf("Multiplication: Multiplication of entered numbers = %d\n",mul);
return 0;
}

Output:-

Osaved main.c 2 int main) gcc version 4.6.3 Enter the value of first number: Enter the value of second number: share 1 #include<stdio.h> /Ideclaration of two variables and pointers to those variables int firstnum, secondnum, p, q int sum, sub, mul; Addition: Addition of entered numbers 16 Subtraction: Subtraction of entered numbers-4 Multiplication: Multiplication of entered numbers 60 printf("Enter the value of first number: In") scanf("%d", &firstnum); printf( "Enter the value of second number:In"); scanf("%d", &secondnum); 1e 12 > 13 14 15 16 17 18 19 20 21 p &firstnum; q&secondnum; //perform Addition, Subtraction and Multiplication sub- "p- "q; mul p q 23 24 25 26 //print the results printf("Addition : Addition of entered numbers %d\n", sum); printf("Subtraction: Subtraction of entered numbers-%d\n", sub); printf("Multiplication : Multiplication of entered numbers-%d\n",mul); return ;