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

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<

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 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."

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];

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) {

print a semicolon using Cprogram without using a semicolon any where

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

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.

Link list in reverse order.

recursive reverse(ptr) if(ptr->next==NULL) return ptr; temp=reverse(ptr->next); ptr=ptr->next; return ptr; end

How do I write a program to print proper subset of given string . Eg

Finding a number multiplication of 8 with out using arithmetic opera

i << 3

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

Write out a function that prints out all the permutations of a string

/*guys..I have implemented Jhonson trotter algorithm..u can print permutations of 123..n. implement the same for strings!*/ #include #include int min(int a[10],int n) { int i,m=1; for(i=2;i<=n;i

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