The Ternary Operator

This lesson covers the ternary operator, which lets you write an if statement in a single line. It's for anyone searching "C++ ternary operator usage."

The form condition ? value-if-true : value-if-false picks one of two values based on a condition, all in one line. For a simple branch, it's more compact than an if statement.

The example decides between "Pass" and "Fail" based on the value of int score = 75;, using the ternary operator.

A common early mistake is overusing the ternary operator until it becomes hard to read. It's convenient for a simple condition, but nesting them makes things confusing instead — an if statement is the better choice for complex conditions.

In real projects, the ternary operator is used to keep code compact — a simple conditional assignment to a variable, for example.

📖 Reference code

#include <iostream>

int main() {
    int score = 75;
    std::string result = (score >= 60) ? "Pass" : "Fail";
    std::cout << result << std::endl;
    return 0;
}

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🧪 This site can't compile or run C++ directly, so it checks on the spot whether what you typed matches the reference code (scoring happens entirely in your browser — nothing is sent anywhere).