无序线性搜索（Unordered Linear Search）

#include<stdio.h>
 
// a function to search "data" in an array "arr" of size "size"
// returns 1 if the element is present else 0
int unorderedLinearSearch(int arr[], int size, int data)
{
    int found_flag = 0;
     
    int i;
    for(i=0;i<size;i++)
    {
        //loop through the entire array and search for the element
        if(arr[i] == data)
        {
            // if the element is found, we change the flag and break the loop
            found_flag = 1;
            break;
        }
    }
     
    return found_flag;
}
 
//driver program to test the function
int main(void)
{
    int arr[10] = {2, 6, 4, 10, 8, 1, 9, 5, 3, 7};
     
    int to_search = 5;
     
    if(unorderedLinearSearch(arr,10,to_search))
        printf("FOUND");
    else
        printf("NOT FOUND");
 
    return 0;
}