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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
...ype float are passed as variadic parameters, such arguments are implicitly converted to type double. This is the reason why in printf format specifiers %f and %lf are equivalent and interchangeable. In printf you can "cross-use" %lf with float or %f with double.
But there's no reason to actually do...
What does int argc, char *argv[] mean?
In many C++ IDE's and compilers, when it generates the main function for you, it looks like this:
8 Answers
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How do you find the sum of all the numbers in an array in Java?
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What if array contains large numbers and the sum is out of int scope?
– thanhbinh84
Apr 1 '16 at 15:31
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
I have a computer with 1 MB of RAM and no other local storage. I must use it to accept 1 million 8-digit decimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection.
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Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate
I've seen mixed versions of this in a lot of code. (This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters.
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Call by name vs call by value in Scala, clarification needed
As I understand it, in Scala, a function may be called either
16 Answers
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Write to UTF-8 file in Python
...e help? I need to append a string (paragraph) to a text file. Do I need to convert that into an integer first before writing?
– Mugen
Apr 2 '18 at 12:40
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Can I have onScrollListener for a ScrollView?
I am using a HorizontalScrollView in a layout and I need to identify the user have reached the start and end point of the scroll.
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How to initialize an array in Java?
...tic void product(int[] array){ int[] productArray = new int[array.length]; and want to set all the values of productArray zero, what should I write? (I think I should write a loop and set all values to zero, is there any better way to do this?)
– Hengameh
Aug 2...
How can I get zoom functionality for images?
Is there a common way to show a big image and enable the user to zoom in and out and pan the image?
13 Answers
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