Question

我想比较用户输入（文本）和linux下c ++中已声明的字符串（code :: blocks）我做了这样的事情，但它没有工作

- (void)testCancelation {
    NSManagedObjectContext *moc = [self makeMOC];

    // Expect that the original block ran to completion and didn't get "interrupted"
    XCTestExpectation *origExpectation = [self expectationWithDescription:@"Original block"];
    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
    [moc performBlock:^{
        dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
        [origExpectation fulfill];
    }];
    NSUInteger __block normalBlockCount = 0, cancelBlockCount = 0;
    for (int i = 0; i < 100; ++i) {
        [moc performBlock:^{
            ++normalBlockCount;
        }];
        [moc performCancelableBlock:^{
            ++cancelBlockCount;
        }];
    }
    [moc cancelPendingBlocks];

    // Expect that only blocks in the queue when the cancel request was issued are canceled
    XCTestExpectation *doneExpectation = [self expectationWithDescription:@"Cancelable block after cancelation"];
    [moc performCancelableBlock:^{
        [doneExpectation fulfill];
    }];
    dispatch_semaphore_signal(semaphore);

    [self waitForExpectationsWithTimeout:10 handler:nil];
    XCTAssertEqual(100, normalBlockCount);
    XCTAssertEqual(0, cancelBlockCount);
}

Answer 1

您需要使用std::getline()输入包含空格字符的std::string：

std::getline(std::cin, test2);

这样做一个简单的比较

if(test1 == test2) {
    std::cout << "Done!" << std::endl;
}

应该有用。

您应该注意std::istream& operator>>(std::istream&, std::string&)只会从输入复制到第一个空格字符（' '，'\t'，'\n'）。

如何将用户输入与字符串进行比较？

1 个答案: