Adding numbers using pointers:
We can add two numbers by dereferencing the pointers that point to the variables storing those numbers.
The code for adding two numbers using pointers is:
#include <stdio.h> int main() { int num1; int num2; int * ptrNum1; int * ptrNum2; int sum; printf("Enter first ineteger: "); scanf("%d", & amp; num1); printf("Enter second ineteger: "); scanf("%d", & amp; num2); ptrNum1 = & amp; num1; //making ptrNum1 point to num1 ptrNum2 = & amp; num2; //making ptrNum2 point to num2 sum = * ptrNum1 + * ptrNum2; //dereferencing the pointers printf("Sum is: %d\n", sum); return 0; }
The input and output for the above code is:
Enter first ineteger: 5 Enter second ineteger: 3 Sum is: 8
- We have created two integer variables num1and num2 and two pointers ptr1 and ptr2.
- The sum variable stores the sum of the two integers.
- ptr1and ptr2 point to num1 and num2
- By dereferencing ptr1and ptr2 we stores the addition of the values stored in num1 and num2.
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