The do statement executes the associated statements, then tests an expression. If the value of the expression is true (non-zero), it returns to the beginning of the loop and executes the associated statements again. It continues in this pattern until the value of the expression is false (zero).
do
{
do these commands;
}
while (expression);
When using a while loop, the loop
commands may not be executed at all; however, using a do
... while loop guarantees that the loop commands are executed
at least once.
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