int a=200, b=-40, c=90; 
String sa = nfs(a, 10); 
println(sa); // prints " 0000000200" 
String sb = nfs(b, 5); 
println(sb); // prints "-00040" 
String sc = nfs(c, 3); 
println(sc); // prints " 090" 
 
float d = -200.94, e = 40.2, f = -9.012; 
String sd = nfs(d, 10, 4); 
println(sd);  // prints "-0000000200.9400" 
String se = nfs(e, 5, 3); 
println(se);  // prints " 00040.200" 
String sf = nfs(f, 3, 5); 
println(sf);  // prints "-009.01200"