Let us learn how to subtract two numbers using pointers in C programming using user-defined functions with an output.
The C program for subtraction of two pointers makes use of the de-reference operator, also known as the asterisk (*). The user-defined function used here makes use of the call by reference approach.
What is a Pointer?
A pointer is a variable which can be used to store the memory address of another variable which is of the same data-type.
There are many other arithmetic operations that can be performed on pointers in C programming, and they’re enlisted below:
Note: This program to subtract two integers using pointers in C programming is compiled with GNU GCC compiler with gEdit editor on Linux Ubuntu 14.10 operating system.
C Program To Subtract Two Numbers using Pointers and Functions
int subtract(int *x, int *y);
int num1, num2, res;
res = subtract(&num1, &num2);
printf("Subtraction of Two Numbers: %d", res);
int subtract(int *x, int *y)
temp = *x - *y;
If you have any doubts about this C program to subtract two numbers using pointers, let us know about it in the comment section.