Home/ Questions/Error: error: lvalue required as left operand of assignment in c++ - Quick tips
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Lina Jullien
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Asked: 2022-05-11T18:43:20+00:00 In:

Error: error: lvalue required as left operand of assignment in c++ – Quick tips

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I get an error

lvalue required as left operand of assignment

when I try to run the following code:

#include <stdio.h>
int main()
{
    int number = 10 ;
    number + 1 = 20;
    return 0;
}

How to fix error: lvalue required as left operand of assignment in c++. Please give me some good ideas.

lvalue required
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2 Answers

  1. Best Answer
    Expert

    The cause: Number + 1 doesn’t evaluate to an lvalue, so you get above error.

    Solution:

    Change highlighted line

    number + 1 = 20;

    to

    number = 20;

    and above program will work fine.

    • 5

  2. p=p+1; is better for assigning than p+1=p;. 

    int main()
{

 int x[3]={4,5,6};
 int *p=x;
 p=p+1; /*You just needed to switch the terms around*/
 cout<<p<<endl;
 getch();
}
    • 23

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