существует текущая область действия
, например
int foo()
{
return 42;
}
int main()
{
int n = 0;
do
{
n = foo();
printf("received %d\n",n); /* will print "received 42" */
}
while (n != 42) // will quit since n == 42
return 0; // returns 0 to the operating system
}