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CodePudding user response:
Because the queue is belong to the STD namespace, want to use the queue declare a variable is introduced to STD namespace (using namespace STD;) Or write a STD: : the queueCodePudding user response:
Because the queue is belong to the STD namespace, want to use the queue declare a variable is introduced to STD namespace (using namespace STD;) Or write a STD: : the queue