CODEWITHSUNDEEP
c
Robin Meyers
Robin Meyers

Reputation: 3

Syntax for more than 2 possibilities to a condition in C?

Say I have a condition with 2 possibilities: a <= 10 and a > 10. I can use the if...else statement to printf() output 1 if a <= 10 or output 2 if a > 10.

But if I have a condition with 3 possibilities (like a <= 10, 10 < a <= 20, and a > 20) how do I write the program to printf() output 1 if a <= 10, output 2 if 10 < a <= 20, or output 3 if a > 20?

Upvotes: 0

Views: 152

Answers (2)

paxdiablo
paxdiablo

Reputation: 881553

You just nest them, something like:

if ( a < 10) {
    printf("1\n");
} else {
    if (a < 20) {
        printf("2\n");
    } else {
        printf("3\n");
    }
}

or, provided the if statements are the only things nested, you can get rid of quite a few braces:

if ( a < 10)
    printf("1\n");
else if (a < 20)
    printf("2\n");
else
    printf("3\n");

Upvotes: 4

Code-Apprentice
Code-Apprentice

Reputation: 83527

You can still use an if...else statement. The most obvious solution is to nest another if in the else clause. You can add a forth condition by nesting an if...else instead.

This is so common that most languages provide an else if option in order to avoid deep nesting when there are many possible conditions.

Upvotes: 1

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