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  1. #include <stdio.h>
  2. void main(){
  3.     int i,n,key;
  4.     printf("22A91A6151\n");
  5.     printf("ENTER THE NUMBER OF ELEMENTS:");
  6.     scanf("%d",&n);
  7.     int a[n];
  8.     printf("ENTER THE ELEMENTS:");
  9.     for(i=0;i<n;i++){
  10.     scanf("%d",&a[i]);
  11.     }
  12.     int low=0,high=n-1;
  13.     printf("ENTER THE ELEMENT TO BE SEARCHED:");
  14.     scanf("%d",&key);
  15.     int flag=binarysearch(a,low,high,key);
  16.     if(flag==-1)
  17.     printf("Search Unsuccessful");
  18.     else 
  19.     printf("Search Successful, Element found at position :%d",flag);
  20. }
  21. int binarysearch(int *a,int low,int high,int key){
  22.     if(low==high)
  23.     {
  24.         if(a[low]==key)
  25.         return low;
  26.         else
  27.         return -1;
  28.  
  29.     }
  30.     else 
  31.     {
  32.         int mid=low+(high-low)/2;
  33.         if(key==a[mid])
  34.         return mid;
  35.         else if(key>a[mid])
  36.         return binarysearch(a,mid+1,high,key);
  37.         else
  38.         return binarysearch(a,low,mid-1,key);
  39.     }
  40. }
  41.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Standard input is empty
stdout 
22A91A6151
ENTER THE NUMBER OF ELEMENTS:ENTER THE ELEMENTS:ENTER THE ELEMENT TO BE SEARCHED:Search Successful, Element found at position :0
https://ideone.com/DhZ145
language:
C (gcc 8.3)
created:
16 hours ago
visibility:
public

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