#include <stdio.h>

int main() {
    char a,b,temp;
    char *ptr1, *ptr2;

    printf("Enter the values of a and b: \n");
    scanf("%c %c",&a, &b);

    printf("Before swapping a= %c and b=%c\n",a,b);
    ptr1=&a;
    ptr2=&b;

    temp= *ptr1;
    *ptr1= *ptr2;
    *ptr2= temp;

    printf("After swapping a is %c and b is %c", a ,b);
    
    return 0;
}