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C++ keyword: return

From cppreference.com
< cpp‎ | keyword
 
 
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[edit] Usage

  • return statement: as the declaration of the statement

[edit] Example

#include <cstdlib>
#include <iostream>
 
[[nodiscard]] constexpr auto clamp(int value, int min, int max) noexcept
{
    if (value <= min)
        return min;
    else if (max <= value)
        return max;
 
    return value;
    // won't be executed past 'return' statement
 
    std::exit(value);
}
 
int main() noexcept
{
    std::cout << clamp(1, 2, 4);
    std::cout << clamp(3, 2, 4);
    std::cout << clamp(5, 2, 4);
 
    return 0; // the value '0' that in main() indicates a success
}

Output:

234

[edit] See also

(since C++17)
(since C++23)
(since C++20)