### Write a C program for binary search in sorted array.

Solution:
#include <stdio.h>

int main()
{
int c, first, last, middle, n, search, array;

printf("Enter number of elements\n");
scanf("%d",&n);

printf("Enter %d integers\n", n);

for (c = 0; c < n; c++)
{
scanf("%d",&array[c]);
}

printf("Enter value to find\n");
scanf("%d", &search);

first = 0;
last = n - 1;
middle = (first+last)/2;

while (first <= last)
{
if (array[middle] < search)
{
first = middle + 1;
}
else if (array[middle] == search)
{
printf("%d found at location %d.\n", search, middle);
break;
}
else
last = middle - 1;
//       printf("%d\n",middle);
middle = (first + last)/2;
//     printf("%d\n",middle);
}
if (first > last)

return 0;
}

### Printing hello world using C programing

First program to print hello world Program: #include<stdio.h> #include<conio.h> void main() { clrscr(); prinft("HELLO WORLD"); }

### 2D transformation for reflection in C program (Computer Graphics).

Program: #include<stdio.h> #include<conio.h> #include<graphics.h> #include<stdlib.h> void refx(int x1,int x2,int x3,int y1,int y2,int y3){ line(320,0,320,430); line(0,240,640,240); x1=(320-x1)+320; x2=(320-x2)+320; x3=(320-x3)+320; line(x1,y1,x2,y2); line(x2,y2,x3,y3); line(x3,y3,x1,y1); } void refy(int x1,int x2,int x3,int y1,int y2,int y3){ line(320,0,320,430); line(0,240,640,240); y1=(240-y1)+240; y2=(240-y2)+240; y3=(240-y3)+240; line(x1,y1,x2,y2); line(x2,y2,x3,y3); line(x3,y3,x1,y1); } void main() { int gd=DETECT,gm; int x1,y1,x2,y2,x3,y3; clrscr(); initgraph(&gd,&gm,"c://turboc3//bgi"); line(320,0,320,430); line(0,240,640,240); x1=150;y1=100; x2=220;y2=220; x3=220;y3=110; line(x1,y1,x2,y2); line(x2,y2,x3,y3); line(x3,y3,x1,y1); getch(); refx(x1,x2,x3,y1,y2,y3); getch(); refy(x1,x2,x3,y1,y2,y3); getch(); closegraph(); }

### Entering elements into the stack from user and transfering into two stack with equal height.

Solution: #include<stdio.h> #include<conio.h> #define maxsize 50 struct stack {  int stk[maxsize];  int top; }; typedef struct stack STACK; STACK s1,s2; int i,n; int mid; void array(); void push1(); void push2(); void traverse1(); void traverse2(); void main() {  s1.top=-1;  s2.top=-1;  clrscr();      array();      push1();      push2();      traverse1();      traverse2(); } void array() { int arr;   printf("\n enter the no of array ele to be stored ::");   scanf("%d",&n);   mid=n/2;   printf("\n enter the array elements ::\n");  for(i=0;i<n;i++)  {     printf("\n enter arr[%d] ::\t",i);     scanf("%d",&arr[i]);  } } void push1() {    int arr;    if(s1.top== (maxsize-1))    {     printf("\n stack is full ");    }    else    {     for(i=0;i<mid;i++)    {        s1.top=s1.top+1;        s1.stk[s1.top]=arr[i];    }    } } void push2()