The case statement compares an expression to a series of cases and executes the statement or statement group associated with the first matching case:

• case statement supports single or multiple statements.
• Group multiple statements using begin and end keywords.

Syntax:

case (primary_expression)
 {
    case1_expression : statement
    case2_expression : statement
    ...
    caseN_expression : statement
    default          : statement
 }

  1 program case_statement {
  2   do_case(0);
  3   do_case(1);
  4   do_case(2);
  5 }
  6 
  7 task do_case(bit [1:0] sel) {
  8   case(sel) {
  9      0  : printf("Nothing is selected\n");
 10      1  : {
 11             printf("something is selected\n");
 12             printf("This is multi statment example\n");
 13           }
 14      default : { 
 15             printf("Default is selected\n");
 16                }
 17   } // case (sel)
 18 }

 Nothing is selected
 something is selected
 This is multi statment example
 Default is selected

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