Searching algorigthms in C language Binary Search and Linear search

Searching Data from server and displaying it on the users screen is much easier than you think . I am going to discuss Binary Search and Linear search algorithm .
Binary Search
Binary Search algorithm divides data in two parts left and right and search in the sorted data. Sorted data should be provided to this algorithm.

code....

// Binary searth algorithm.
#include<stdio.h>
int main(){
    int a[5]={2,4,6,8,12},n=5,target=8,first=0,last=0,middle=0,step=0;
    first = 0;
    last = n-1;
    middle = (first + last)/2;
    while(last>=first){
        step++;
        if(a[middle] > target){
            last = middle-1;
        }
        else if (a[middle] == target){
            printf("Found at index : %d",middle);
            break;
        }
        else{
            first = middle+1;
        }
        middle = (first + last)/2;
    }
    return 0;

}

Linear Search

Linear search algorithm is easy to learn. It search one by one in the array or list.
it compares one by one .

code.....

#include<stdio.h>
int main(){
    int a[5]={3,6,2,7,8},n=5,i=0,j=0,target=7,step=0;
    for(i=0;i<n;i++){
        if(a[i]==target){
            step=1;
            printf("Found at index : %d ",i);
            break;
        }
    }
    if(step==0){
        printf("Not found");
    }
    return 0;
}


Thank You