#include <iostream>
int main()
{
uint32_t number = 1234;
uint8_t digitsCounter = 0;
while ( number > 0 && digitsCounter++ < 6 )
{
printf( "%hhu", number % 10 );
number /= 10;
}
while ( digitsCounter++ < 6 )
{
printf( "_" );
}
return 0;
}
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