Write a C program that uses non recursive function to search for a Key value in a given sorted list of integers using Binary search
.
Algorithm:
Step 1: Start Step 2: Initialize low = 1 high = n Step 3: Perform Search While(low <= high) Step 4: Obtain index of midpoint of interval Middle = (low + high) / 2 Step 5: Compare if(X < K[middle]) high = middle  1 else print “Element found at position” Return(middle) goto: step 2 Step 6: Unsuccessful Search print “Element found at position” Return (middle) Step 7: Stop
Flowchart:
Program:
#include<stdio.h> #include<conio.h> void main() { int a[20], i, n, key, low, high, mid; clrscr(); printf(“Enter the array elements in ascending order”); for(i = 0; i < n; i++) { scanf(“%d”, &a[i]); } printf(“Enter the key element\n”); scanf(“%d”, &key); low = 0; high = n  1; while(high >= low) { mid = (low + high) / 2; if(key == a[mid]) break; else { if(key > a[mid]) low = mid + 1; else high = mid  1; } } if(key == a[mid]) printf(“The key element is found at location %d”, mid + 1); else printf(“the key element is not found”); getch(); }
Input & Output:
Enter the size of the array 7 Enter the array elements in ascending order 23 45 68 90 100 789 890 Enter the key element 789 The key Element is found at location 6

UpdatedOct 21, 2014

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