使用 setw(20) 无法显示正确的 output

Question

Here is my code. I tried all the different ways with left << setw(20) but it does not show me the proper outcome.

void MotorVehicle::moveTo(const char* address)
    {
        if (strcmp(Address, address) != 0)
        {
            cout << "|" << setw(10) << PlateNumber << "| |" << setw(20) << Address << " --->--- ";
            cout << address << "|" << endl;
            strcpy(Address, address);
        }
    }

Hi guys this is the expected out put.

|    T-1111| |            Montreal --->--- New York            |
|    T-1111| |            New York --->--- New Jersey          |
|    T-1111| |            New Jersey --->--- Toronto           |

Answer 1

Remember setw is not 'sticky'. It only applies to the subsequent output field. All other manipulators apply until the are superseded.

Thus I think you want:

 cout << setw(20) << left << address << "|" << endl;