请解释No brackets to then/else.:855
时间: 2023-08-10 12:08:11 浏览: 85
"No brackets to then/else" 在编程中通常指的是在条件语句中,如果只有单个语句需要被执行,则可以省略掉花括号。这在代码中可以看作是将 if/else 语句的所有操作放在同一行中,而不是用花括号将它们包围起来。在这种情况下,if/else语句只会执行紧接着它的那个语句,而不是花括号中的所有语句。
例如,下面是一个使用 if/else 语句的示例:
```
if (x == 0) {
y = 1;
} else {
y = 2;
}
```
可以将其简化为:
```
if (x == 0)
y = 1;
else
y = 2;
```
这两个代码片段实现的功能是相同的,只是第二个代码片段省略了花括号。这种写法可以使代码更加简洁,但也可能会使代码更难以理解和维护,因此需要根据实际情况进行选择。
相关问题
1 30 D:\Download\opencv.cpp [Error] opencv2/opencv.hpp: No such file or directory compilation terminated.
This error message indicates that the compiler cannot find the OpenCV header file "opencv2/opencv.hpp".
To fix this error, you need to make sure that OpenCV is properly installed on your computer and that the header file is located in the correct directory.
Here are some steps you can follow to resolve this error:
1. Check that OpenCV is installed on your computer. If you haven't installed it yet, you can download and install it from the official OpenCV website.
2. Make sure that the OpenCV include directory is added to your compiler's include path. This can be done by adding the following line to your compiler flags:
-I/path/to/opencv/include
Replace "/path/to/opencv/include" with the actual path to the OpenCV include directory on your computer.
3. Ensure that the "opencv2/opencv.hpp" header file is located in the correct directory. By default, this file should be located in the "opencv2" subdirectory of the OpenCV include directory.
If the file is missing or located in the wrong directory, you may need to reinstall OpenCV or manually copy the header file to the correct location.
4. Finally, make sure that you are using the correct syntax to include the OpenCV header files in your code. The correct syntax should be:
#include <opencv2/opencv.hpp>
Note that the angle brackets "<>" are used instead of double quotes "" to indicate that the header file should be searched for in the system include directories.
Once you have made these changes, try compiling your code again and see if the error has been resolved.
在https://www.boattrader.com/boat/2015-leopard-40-8640227/网站获取details包含的所有内容
Make: Leopard
Model: 40
Year: 2015
Condition: Used
Category: Sail
Builder: Leopard
Designer: Simonis Voogd
Construction: Fiberglass
Keel Type: Other
Dimensions
Length: 40 ft / 12.19 m
Beam: 22 ft 1 in / 6.73 m
Max Draft: 4 ft 2 in / 1.27 m
Min Draft: 4 ft 2 in / 1.27 m
Displacement: 21,000 lb / 9,525 kg
Engines / Speed
Engines: 2
Engine #1 Specs:
Make: Yanmar
Model: 3YM30
Drive Type: Sail Drive
Fuel: Diesel
Engine Power: 29hp
Type: Inboard
Propeller Type: 3 Blade
Year: 2015
Engine Hours: 2000
Engine #2 Specs:
Make: Yanmar
Model: 3YM30
Drive Type: Sail Drive
Fuel: Diesel
Engine Power: 29hp
Type: Inboard
Propeller Type: 3 Blade
Year: 2015
Engine Hours: 2000
Total Engine Power: 58hp
Cruising Speed: 6 kn
Maximum Speed: 8 kn
Tanks
Fuel Tanks: 2
Fuel Tank Capacity: 92 gal / 348.26 L
Water Tanks: 2
Water Tank Capacity: 206 gal / 779.85 L
Holding Tank Count: 2
Holding Tank Capacity: 45 gal / 170.34 L
Accommodations
Heads Count: 2
Cabins Count: 3
Layout: Owner's Version
Electronics
Depthsounder
Log-Speedometer
Wind Speed and Direction
Repeater(s)
Navigation Center
Plotter
Autopilot
Compass
GPS
VHF
Radar
TV Set
Radio
CD Player
Cockpit Speakers
Sails
Fully Battened Mainsail
Furling Genoa
Rigging
Steering Wheel
Electric Winch
Inside Equipment
Electric Bilge Pump
Manual Bilge Pump
Battery Charger
Hot Water
Oven
Microwave Oven
Electric Head
Refrigerator
Deep Freezer
Electrical Equipment
Shore Power Inlet
Generator
Inverter
Outside Equipment/Extras
Solar Panel
Cockpit Cushions
Cockpit Table
Swimming Ladder
Cockpit Shower
Davits
Tender
Outboard Engine Brackets
Covers
Bimini Top
Lazy Bag
Lazyjacks
Manufacturer Provided Description
The Leopard 40's speed on the water and easy handling are its top features, earning it 'Boat of the Year 2016' from Cruising World magazine. Guests will enjoy the large cockpit with outside dining area, protected by a functional hard-top bimini, fitted as standard. The galley-up design incorporates a spacious saloon and aft facing galley with a cocktail bar and serving window overlooking the cockpit. Accommodations include 3 or 4 double cabins, each with an en-suite head. The cockpit is a perfect place to relax and entertain guests, with comfortable seating and a table that seats 8. Forward and aft there are sunbathing lounges. All blocks and winches are electric, except for the mainsail halyard winch, which is conveniently located on the coachroof. The sail plan includes a full-batten mainsail, with stack-pack and lazy-jacks, and a roller-furling genoa. The Leopard 40 is also equipped with a generator and air conditioning.
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