if statement

if statement Selection statement

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.


template<typename T>

T abs(T x)


  if (x < T(  ))

    return -x;


    return x;


See Also

expression, else, statement, Chapter 4