The gcd program of Example $1\mathrm{.}20$ might also be written

int main$()\{$

int i $=$ getint$(),$ j $=$ getint$()$; while $($i $!=$ j$)\{$

if $($i $>$ j$)$ i $=$ i $\%$ j;

else j $=$ j $\%$ i; $\}$

putint$($i$)$; $\}$