c - #include does not see the function definition -

i have .c , .h file:

misc.c

#include "misc.h"     int isallzeros(int *arr, int l) {     int i;     int allzeros = 1;     (i = 0; i<l; i++)     {         if(arr[i])         {             allzeros = 0;             break;         }     }     return allzeros; }   int containsdup(int *arr1, int *arr2, int l1,int l2) {     int i,k;     int dup = 0;     (i = 0; i<l1; i++)     {         (k=0;k<l2;k++)         {             if(arr1[i] == arr2[k])             {                 dup = 1;                 break;             }         }         if (dup) break;     }     return dup; } 

and misc.h

#ifndef misc_h #define misc_h  #include "ext.h" #include "ext_obex.h" #include "ext_path.h"  typedef struct _mnote {     t_uint32 t;     t_uint8 note, vel; } t_mnote;  typedef struct _mped {     t_uint32 t;     t_uint8 state; } t_mped;  typedef struct _note {     t_uint32 t, length;     t_uint8 note, vel; } t_note;  typedef struct _chordind {     int length;     int notes[5]; } t_chordind;   int isallzeros(int *arr, int l);  int containsdup(int *arr1, int *arr2, int l1,int l2);  #endif 

in main .c file first line #include "misc.h". sees structs declared in .h file doesn't see function definition in .c file. when add #include "misc.c" main file works, why not work .h?