Answer Posted / sayyedibrahim

#include <stdio.h>

void putint(int x);

int main(void)
{
puts("[output]");
putint(13725);
putchar('\n');
putint(5500);
putchar('\n');
return 0;
}

void putint(int x)
{
if (x)
{
putint(x / 10);
putchar('0' + x % 10);
}
}

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