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Can we initialize a reference with different name in C++

Green Team answered on January 27, 2023 Popularity 1/10 Helpfulness 1/10

answer Can we initialize a reference with different name in C++

Can we initialize a reference with different name in C++

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/* Test Function const and non-const parameter (FuncationConstParameter.cpp) */
#include <iostream>
using namespace std;
 
int squareConst(const int);
int squareNonConst(int);
int squareConstRef(const int &);
int squareNonConstRef(int &);
 
int main() {
   int number = 8;
   const int constNumber = 9;
   cout << squareConst(number) << endl;
   cout << squareConst(constNumber) << endl;
   cout << squareNonConst(number) << endl;
   cout << squareNonConst(constNumber) << endl;
 
   cout << squareConstRef(number) << endl;
   cout << squareConstRef(constNumber) << endl;
   cout << squareNonConstRef(number) << endl;
   // cout << squareNonConstRef(constNumber) << endl;
       // error: invalid initialization of reference of
       //  type 'int&' from expression of type 'const int'
}
 
int squareConst(const int number) {
   // number *= number;  // error: assignment of read-only parameter
   return number * number;
}
 
int squareNonConst(int number) {  // non-const parameter
   number *= number;
   return number;
}
 
int squareConstRef(const int & number) {  // const reference
   return number * number;
}
 
int squareNonConstRef(int & number) {  // non-const reference
   return number * number;
}

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: www3.ntu.edu.sg

Tags: c++ reference

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Contributed on Jan 27 2023

Green Team

0 Answers Avg Quality 2/10

Can we initialize a reference with different name in C++

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