Conditionals & switch in C++

From the C++ cheat sheet · Control Flow · verified Jul 2026

if/else and switch, including init-statements.

cpp

// Quick Reference
if (x > 0) { ... } else if (x < 0) { ... } else { ... }

switch (n) {
    case 1: ...; break;
    default: ...;
}

💡 switch needs an explicit break per case, or execution falls through to the next.

⚡ The C++17 if-init form (if (init; cond)) scopes helpers tightly to the branch.

📌 switch works on integers and enums, not on strings or floating-point values.

🟢 Stacked case labels with no break share one body - a clean way to group values.

conditionalsswitch

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