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Software

C++ Logic Flow Control

IF Statement¶

Syntax¶

IF (condition)
   {statements}
ELSE
   {statements}

Notes¶

The ELSE clause is optional

SWITCH Statement¶

Syntax¶

SWITCH (expression) 
    { 
    CASE const1: statements; 
                 BREAK; 
    CASE const2: 
    CASE const3: statements; 
                 BREAK; 
    DEFAULT: statements; 
    }

Notes¶

• The BREAK statements are optional
• The DEFAULT clause is optional
  

FOR Loop¶

Syntax¶

FOR (InitExpr; TestExpr; IncrExpr)
   {
       LoopStmts;
   }

Notes¶

• InitExpr is optional, and executed only before the first pass
• TestExpr is optional. If omitted, is is always TRUE, and the only way to exit the loop is with a BREAK statement
• TestExpr is tested for truth before EVERY pass
• IncrExpr is executed after EVERY pass
• LoopStmts are optional
• All three expressions can contain multiple statements separated by commas. Only the last statement in TextExpression affects execution
• Within the loop the CONTINUE statement will skip the rest of the current iteration and continue with the next.
  

WHILE Loop¶

Syntax¶

WHILE (condition)
   {
       LoopStmts;
   }

Notes¶

Uses the BREAK and CONTINUE statements in the same way as a FOR loop

DO-WHILE Loop¶

Syntax¶

DO
   {
   LoopStmts;
   } WHILE (condition);

Notes¶

Uses the BREAK and CONTINUE statements in the same way as a FOR loop