#include <stdio.h>
int main ( void )
{
int imang[ 50 ] , in, isum= 0 , i;
printf ( "Moi nhap vao so phan tu cu mang: " ) ;
for ( i= 0 ; i< in; i++ )
{
printf ( "Nhap phan tu thu %d: " , i
+ 1 ) ; }
for ( i= 0 ; i< in; i++ )
isum+= imang[ i] ;
printf ( "Trung binh cong la: %5.5lf" , ( double ) isum
/ in
) ; }
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