The Following Code Snippet Is Supposed to Output "True" If $\quad$

question 31

Essay

The following code snippet is supposed to output "true" if the string "c++" is in the map<string,int> and false otherwise.However,it has an error.Describe the error and give a fix.
if (mymap["c++"]==0)
{
$\quad$ cout << "false" << endl;
}
else
{
$\quad$ cout << "true" << endl;
}

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