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Showing content from https://cplusplus.com/reference/stdexcept/length_error/ below:

class

<stdexcept>

Length error exception

It is a standard exception that can be thrown by programs. Some components of the standard library, such as vector and string also throw exceptions of this type to signal errors resizing.

It is defined as:

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class length_error : public logic_error {
public:
  explicit length_error (const string& what_arg);
};

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class length_error : public logic_error {
public:
  explicit length_error (const string& what_arg);
  explicit length_error (const char* what_arg);
};

constructor

The string passed as what_arg has the same content as the value returned by member what.

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// length_error example
#include <iostream>       // std::cerr
#include <stdexcept>      // std::length_error
#include <vector>         // std::vector

int main (void) {
  try {
    // vector throws a length_error if resized above max_size
    std::vector<int> myvector;
    myvector.resize(myvector.max_size()+1);
  }
  catch (const std::length_error& le) {
	  std::cerr << "Length error: " << le.what() << '\n';
  }
  return 0;
}

Length error: vector::_M_fill_insert

exception

Standard exception class (class)

logic_error

Logic error exception (class)

runtime_error

Runtime error exception (class)

domain_error

Domain error exception (class)

invalid_argument

Invalid argument exception (class)

out_of_range

Out-of-range exception (class)

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