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Asked by Pradeep Last Modified
Answer 
An if-else statement controls conditional branching. Statements in the if-branch are executed only if the condition evaluates to a nonzero value (or true). If the value of condition is nonzero, the following statement gets executed, and the statement following the optional else gets skipped. Otherwise, the following statement gets skipped, and if there's an else then the statement following the else gets executed.
Ex:
int x = 10;
if (x < 11)
{
cout << "x < 11 is true!\n"; // executed
}
else
{
cout << "x < 11 is false!\n"; // not executed
}
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