填空题

#include ＜stdio. h＞
void main( )
int digit;
long in , s;
seanf(" % Id", &in );
(1) ;
(2) ;
while(in ＞0)
(3) ;
s = s + digit* digit;
(4) ;

pfinff( "sum = % 1dn", s );

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