linear_search.c

#include <stdio.h>

int main() {
    int m, n, i, out;
    scanf("%d", &m);
    int arr[m];
    for(i = 0; i < m; i++)
        scanf("%d", &arr[i]);
    scanf("%d", &n);

    for(i = 0; i < m; i++)
        if (arr[i] == n) {
            out = i+1;
            break;
        }
        else
            out = -1;
    printf("%d", out);
    return 0;
}