How we solve this problem? (Help )

Question

Enter a number to search:12
Found

Enter a number to search:11
Not found
Program:
#include <stdio.h>

int main()
{
​int a[10];
​int k;

​for (int i = 0; i < 10; i++)
​​a[i] = i*2;
​
​for (int j = 0; j < 10; j++)
​​printf("a[%d]= %d\n", j, a[j]);

​printf("Enter a number to search\n");
​scanf_s("%d", &k);

​for (int x = 0; x < 10; x++)
​{
​​if (k == a[x])
​​​printf("Found");
​​else
​​​printf("Not found");
​}

​return 0;
}

Answer 1

Looks like you used a word processor to code or copy pasted this code from somewhere.

Because there are a lot of non printable characters in your code which were added by word processor to format it

Answer 2

https://www.sololearn.com/discuss/2595339/?ref=app

Answer 3

You can solve it with linear or binary search... If you found the desired number, print found, break the loop, if it's not found (usually -1), print not found.