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?

What is the main difference between STRUCTURE and UNION?

All the members of the structure can be accessed at once,where as in an union only one member can be used at a time. Another important difference is in the size allocated to a structure and an union. for eg: struct example { int integer;

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];

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 can u draw a rectangle in C

BY USING PRINTF AND SCANF

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

U can done it by using current timestamp option.

program to find the roots of a quadratic equation

#include #include #include #include void main() { float a,b,c,x1,x2,disc; clrscr(); printf("Enter the co-efficients\n"); scanf("%f%f%f",&a,&b,&c);

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; }

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.

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 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 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

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();

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 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."

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