/*if( boolean_expression 1) {

    Executes when the boolean expression 1 is true 
   if(boolean_expression 2) {
       Executes when the boolean expression 2 is true 
   }
}*/

#include <stdio.h>
 
int main () {

   /* local variable definition */
   int a = 100;
   int b = 200;
 
   /* check the boolean condition */
   if( a == 100 ) {
   
      /* if condition is true then check the following */
      if( b == 200 ) {
         /* if condition is true then print the following */
         printf("Value of a is 100 and b is 200
" );
      }
   }
   
   printf("Exact value of a is : %d
", a );
   printf("Exact value of b is : %d
", b );
 
   return 0;
}

/*Value of a is 100 and b is 200
Exact value of a is : 100
Exact value of b is : 200*/