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C++ In a Nutshell
book

C++ In a Nutshell

by Ray Lischner
May 2003
Intermediate to advanced content levelIntermediate to advanced
808 pages
32h 24m
English
O'Reilly Media, Inc.
Content preview from C++ In a Nutshell

Name

if statement — Selection statement

Synopsis

               statement := if ( condition ) statement | 
    if ( condition ) statement else statement
               condition ::= expression | type-specifier-seq 
               declarator = assignment-expr
            

The if statement tests condition, and if it is true, executes the first statement. If condition is false, and an else part is present, the else statement is executed; if there is no else part, execution continues with the statement immediately after the end of the if statement. If condition contains a declaration, the declared name is in the scope of both the if and else statements.

Example

template<typename T>
T abs(T x)
{if (x < T(  ))
    return -x;
  else
    return x;
}

See Also

expression, else, statement, Chapter 4

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Publisher Resources

ISBN: 059600298XSupplemental ContentErrata Page