int a,b,c,d,e,f,g,h,i,j;

a=12;

if(a==10) println("a is 10");
else println("a is not 10");

b=12;

if(a==b) println("a is equal to b");
else println("a is not equal to b");

a=15;
b=10;
c=15;
d=12;

if(a==b) println("a is equal to b");
else if(a==c) {
  println("a is equal to c");
  println("that's a good thing.");
}
else if(a==d) println("a is equal to d");
else println("none of the above");