Conditionals

Conditionals

C uses if, else if, and else for conditional execution.

if / else

int x = 10;
if (x > 0) {
    printf("positive\n");
} else if (x < 0) {
    printf("negative\n");
} else {
    printf("zero\n");
}

Red alert conditions: "Shields up!" only triggers when sensors detect a threat. That's an if statement protecting the ship.

Comparison Operators

Logical Operators

The Ternary Operator

A compact way to write simple conditionals:

int x = 5;
const char *label = (x > 0) ? "positive" : "non-positive";

Your Task

Write a function classify that takes an int and prints "positive", "negative", or "zero" followed by a newline. Call it three times from main with the values 42, -7, and 0.