c - Index value won't change -

i'm trying implement linear search function search particular number in user "inputs" however, example user wants search number 3 in given array. function should return index value of 2. code returns 6 no matter input enter. suspect there wrong in main function (maybe while using loop, value of gets fixed 6?). ideas?

#include <stdio.h> #include <stdlib.h> #include <time.h>   #define numberofelements 6 #define not_found -1  int linearsearch (int *myarray, int key, int i);  int main (int argc, char *argv[]){     int i, key, myarray[] = {1, 2, 3, 4, 5, 6};    printf("input: ");    (i = 0; < numberofelements; i++){       printf("%d ", myarray[i]);    }    printf("\n");    printf("please enter number wish search for: ");    scanf("%d", &key);    linearsearch (myarray, key, i);    printf("the number %d @ index %d\n", key, i);     return 0; }    int linearsearch (int *myarray, int key, int i) {     (i = 0; < numberofelements; i++){       printf("checking index %d\n", i);       if (myarray[i] == key){          printf("%d\n", i);          return i;          break;       }       printf("it's not here!\n");    }     return not_found; } 

you ignore return value linearsearch function. hence don't print answer.

note should not pass i function instead declare within loop:

for (int i=0; i<... etc