1.
if (a == 1 && b != 1) {
formoutput("a not b");
}
2.
if (a == 1) {
formoutput("a")
} else {
formoutput("not a")
}
3.
if (a < 10) {
formoutput("small");
} elseif (a >= 10 && a < 20) {
formoutput("medium");
} else {
formoutput("large");
}
4.
if (a > b && a < c) {
formoutput ("b-a-c");
} elseif (b < a) {
formoutput ("b-a");
} elseif (a == b && b == c) {
formoutput ("all equal");
} else {
formoutput ("none of the above");
}