How to use IF statement with 8051?

[Prabakaran P M]

Here is the code:

#include <reg51.h>
sbit S1 = P2^0;
sbit S2 = P2^1;

sbit Led = P1^0;
sbit Led2 = P1^1;

void main()
{
S1 = 1;
S2 = 1;

 while(1)  // For ever
 {
  if(S1 == 0) 
  {
    Led = 0;              
        while(S1 == 0);
  }
  Led = 1;
 }

 {  ////// remove this curly bracket
 if (S2 == 0)
 {
 Led2 = 0;
 while (S2 == 0);
 }
  Led2 = 1;
  }

 }