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C program to swap two numbers using pointers
In simple terms pointers are the variables which store addresses of another variable.
It can also store addresses of functions, arrays, structures and other pointers along with primitive data type variables.
Logic to swap two numbers using pointers in C
#include<stdio.h>
//itvoyagers.in
void swap(int *a, int *b)
{
int temp;
temp = *a;
*a = *b;
*b = temp;
}
//itvoyagers.in
int main()
{
int x, y;
printf("Enter first number : ");
scanf("%d",&x);
printf("Enter second number : ");
scanf("%d",&y);
printf("Value of X before swapping = %dnValue of Y before swapping = %d", x, y);
swap(&x, &y);
printf("nValue of X after swapping = %dnValue of Y after swapping = %d", x, y);
return 0;
}
Output :
Enter first number : 5
Enter second number : 8
Value of X before swapping = 5
Value of Y before swapping = 8
Value of X after swapping = 8
Value of Y after swapping = 5
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