if statement

if statement

Selection statement

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  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