How to swap two variables, without using third variable ?

Hi this question was asked in my interview. Ans is : a=a+b; b=a-b; a=a-b; Any other solution?

how can u draw a rectangle in C

BY USING PRINTF AND SCANF

Write a function to find the depth of a binary tree.

int Depth(struct Node*node,int level) { if(Node!=NULL) { if(levelleftchild,level+1); Depth(Node->rightchild,level+1); } return(depth); }

How to reverse a String without using C functions ?

my_strrev(char str[Max]){ int i; // pointing to base adress int l; //pointing to last address strlen(str) -1th position char temp; for(i=0,l=strlen(str)-1;i<=l; i++ ,j--) { temp=str[i]; str[i]=str[l];

Program to find the largest sum of contiguous integers in the array.

#include #include main() { int s=-1,m=1,n,max=0,e=-1,sum=0,i,a[20]; cout<<"enter n:"; cin>>n; cout<<"enter elements:"; for(i=0;i>a[i]; for(i=0;i<

How to return multiple values from a function?

Make array of values and return the array address as long. Now using pointer traverse through the value.

How to send e-mail from an ASP.NET application?

MailMessage message = new MailMessage (); message.From = ; message.To = ; message.Subject = "Scheduled Power Outage"; message.Body = "Our servers will be down tonight."

1)how i get the current system time using php?

U can done it by using current timestamp option.

Give a oneline C expression to test whether a number is a power of 2

#include void main() { int number; printf("|n enter a number"); scanf("%d",&number); int twopower(int); printf("\n the given number is "); } int twopower(int num) {

program to Reverse a linked list

node *reverse(node *first) { node *cur,*temp; cur=NULL; while(first!=NULL) {temp=first; first=first->link; temp->link=cur; cur=temp; } return cur; }

To Write a C program to remove the repeated characters in the entere

int remove_duplicates(char *str) { int char_check=0; int i,j; char ch; if(str == NULL) return 0; /* check from 1st character in the string */ while(str[char_check]) { ch = str[char_check];

How to create and run runnable jar file of a Java Project.

Common Examples ---------------- Let's say I have a Java application consisting of three source files that I wish to distribute: One.javaTwo.javaThree.java I also want to call my JAR file example.jar. To make a JAR file with just One

print a semicolon using Cprogram without using a semicolon any where

void main() { if(printf("semicolon")){} if(printf(getch())){} }

how to check whether a linked list is circular.

Create two pointers, each set to the start of the list. Update each as follows: while (pointer1) { pointer1 = pointer1->next; pointer2 = pointer2->next; if (pointer2) pointer2=pointer2->next; if (pointer1 == pointer2) { print

How to convert string containing decimal point into integer in java?

/* How to convert string containing decimal point into integer in java? For example given a string like "3.14" as input how to get integer 3 as result. */ String myStr = "3.14"; Int myInt = Float.valueOf(myStr).intvalue();

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