Question

This is not efficient, simplify this.
 if (n == 1)
      result = n + 2;
    if (n == 2)
      result = n + n;
    if (n == 3)
      result = 3 * n;
    if (n <= 0)
      result = 0;
    if (n > 3)
      result = 1;

Answer 1

We will use a simple if and else statement.

The if statement will control n>3, and the else part will use the switch statement.

We will use a switch statement for the case n == 1 , n == 2, n == 3, and the default case for n <=0.

Here is the simplification

if( n > 3)

{

result = 1;

}

else

{

switch(n)

{

case 1: result = n + 2;

              break ;

case 2: result = n + n;

              break ;

case 3: result = 3*n;

              break ;

default: result = 0;

           break;

}

}

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