Swapping of two numbers without arithmatic operator without temporary variable

#include<stdio.h>
void swap(int *a,int *b)
{
     *a^=*b^=*a^=*b;
 }
 int main()
 {
     int a=10,b=20;
     swap(&a,&b);
     printf("%d %d",a,b);
     getch();
     return(0);
 }

Comments

Post a Comment

Popular posts from this blog

How to set background color of navigation bar in iPhone

just type the following code in - viewDidLoad method     UIView *naview=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];       naview.backgroundColor = [UIColor colorWithRed:112/255.f green:50/255.f blue:19/255.f alpha:255/255.f];     UILabel *titleLabel=[[UILabel alloc] initWithFrame:CGRectMake(80, 5, 200, 25)];     titleLabel.textColor=[UIColor colorWithRed:255/255.f green:255/255.f blue:215/255.f alpha:255/255.f];     [titleLabel setBackgroundColor:[UIColor clearColor]];     titleLabel.text=@"title";     [naview addSubview:titleLabel];     [self.navigationController.navigationBar addSubview:naview];
Read more

Checking Device Info in ios

#include <sys/types.h> #include <sys/sysctl.h> - (NSString *)machineInfo { NSString *device; size_t size; sysctlbyname("hw.machine", NULL, &size, NULL, 0); char *name = malloc(size); sysctlbyname("hw.machine", name, &size, NULL, 0); device = [NSString stringWithUTF8String:name]; free(name); return device; }
Read more

Some Interactive tips to take input form GUI Dialogs

Image
import javax.swing.*; class Dialog {     public static void main(String[] args)     {         JOptionPane.showMessageDialog(null,"Enter the two numbers");         int x=Integer.parseInt(JOptionPane.showInputDialog("Enter first number"));         int y=Integer.parseInt(JOptionPane.showInputDialog("Enter second number"));         int z=x+y;         JOptionPane.showMessageDialog(null,"Sum : " + z);             } }
Read more