swap two numbers using pointers
#include<stdio.h>
#include<conio.h>
void swap(int *a,int *b);
void main()
{
int a = 20;
int b = 30;
printf("Before swapped: a = %d and b = %dn",a,b);
swap(&a,&b);
printf("Swapped result: a = %d and b = %dn",a,b);
getch();
}
void swap(int *a, int *b)
{
int temp;
temp = *a;
*a = *b;
*b = temp;
}swap 2 numbers without using 3rd variable
a=10;
b=20;
a=a+b;//a=30 (10+20)
b=a-b;//b=10 (30-20)
a=a-b;//a=20 (30-10)Copyright © 2021 Codeinu
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