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Mastering Development

Why cant we call nonstatic method from static method? [duplicate]

I have a class Program. Here it has main method.It is static method. I created a simple getAllSum method to return sum of three values.But, if i remove static keyword then i get error as: **Cannot make a static reference to the non-static method getALlsum(int, int, int) from the type Program ** If I am […]

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Development

Why is this function not returning the right number of common elements between the arrays?

I was solving an exercise which goes as follows: Create a function with the following prototype int commons(int a[], int na, int b[], int nb) which returns how many numbers the array a (of size na) has in common with array b (of size nb). The arrays are not ordered. The exercise does not say […]

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Development

Boolean function in program returns that an entered range is invalid no matter what

I am working on a program that determines if there are numbers with repeating digits within a range. The program itself works fine – but one component of it is determining whether or not the user entered range is valid. It is required that I make a boolean function for this called range_is_valid. The two […]

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Development

How do I access the three ints that determine the Color class’ color?

I need to make a method that takes no parameters that dims the Color, it is at the bottom of this code. I put the placeholders ‘a’ ‘b’ and ‘c’ in place of what is supposed to access the three numbers that determine a Color’s color. public class Color { final static Color RED = […]

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Development

Deconstructor call in a class constructor with a vector

I have the following class which simply wraps an array and adds with the constructor some elements to it: public: myArray(); myArray(int a, int b); myArray(int a, int b, int c); myArray(myArray&& emplace); ~myArray(); int& operator [](int id); private: int *data; }; myArray::myArray() { data = new int[1]; data[0] = 0; } myArray::myArray(int a, int […]

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Development

C++14 expand a tuple three by three

I have a C++14 tuple of size multiple of 3 and I would like to expand it 3 by 3 sequentially to a function. tuple<int, int, int, int, int, int> a(1, 2, 4, 6, 7, 2); void process_triplet(int& mystate, int a, int b, int c) { // do something on a b c and mystate […]

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Development

Unable to execute groovy test files in Springboot application

I have created a sample SpringBoot application for writing unit-tests using Spock framework. Below are the files. Calculator.Java public class Calculator { @Autowired Addition addition; public int calculate(int a, int b, String choice) { return addition.add(a, b); } } I have created test-class using Junit as below, its working fine CalculatorTest.java @SpringBootTest public class CalculatorTest […]

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Development

Evaluation of variable through pass-by-name

I am learning parameter passing. I’ve been working on a question about parameter passing, but I don’t understand one problem. I searched the Internet, but there was no example of a parameter being expression. If it’s a expression, can I know how to evaluate pass-by-name? The problem is as follows. function func(int a, int b, […]

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Development

Link .ll files generated by compiling .cu file with clang

I am compiling the following code using clang with: clang++ -std=c++11 -emit-llvm -c -S $1 –cuda-gpu-arch=sm_30. This generates vectoradd-cuda-nvptx64-nvidia-cuda-sm_30.ll and vectoradd.ll files. The goal to run some LLVM analysis passes on the kernel, which would possibly instrument it. So i would like to link the post-analysis IR to an executable but i am not sure […]

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Development

Trouble opening text files in C program

I have searched and tried troubleshooting this problem for a while now but still can’t make it seem to work. The program is not opening 2 files I have saved to my desktop and the program just ends stating the file opening error. It is supposed to decode a secret message based on a file […]