c program to swap two numbers using call by reference
#include <stdio.h>
void swap(int*, int*);
int main()
{
int x, y;
printf("Enter the value of x and y\n");
scanf("%d%d",&x,&y);
printf("Before Swapping\nx = %d\ny = %d\n", x, y);
swap(&x, &y);
printf("After Swapping\nx = %d\ny = %d\n", x, y);
return 0;
}
void swap(int *a, int *b)
{
int temp;
temp = *b;
*b = *a;
*a = temp;
}swap two numbers in c
#include <stdio.h>
int main() {
double a, b;
printf("Enter a: ");
scanf("%lf", &a);
printf("Enter b: ");
scanf("%lf", &b);
// Swapping
// a = (initial_a - initial_b)
a = a - b;
// b = (initial_a - initial_b) + initial_b = initial_a
b = a + b;
// a = initial_a - (initial_a - initial_b) = initial_b
a = b - a;
printf("After swapping, a = %.2lf\n", a);
printf("After swapping, b = %.2lf", b);
return 0;
}c program for swapping of two numbers using temporary variable
#include <stdio.h>
int main()
{
int a, b, temp;
printf("enter the values of a and b: \n");
scanf("%d%d", &a, &b );
printf("current values are:\n a=%d\n b=%d\n", a, b);
temp=a;
a=b;
b=temp;
printf("After swapping:\n a=%d\n b=%d\n", a, b);
}Copyright © 2021 Codeinu
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