Struct inheritance in C++
Can a struct be inherited in C++?
c++
convert string to size_t
You can use %zd as the format specifier in a scanf-type approach. Or use a std::stringstream which will have an overloaded >> to size_t.
error C2244 unable to match function definition to an existing declaration
I’m trying to create a simple template list in C++, Visual Studio 2010 & I’m the getting : error C2244 unable to match function definition to an existing declaration. I’ve tried to change it to ‘typename’ but it didn’t help. it’s a basic template list with the very basic functions ( Ctor,Dtor,Add,Delete). Please help. You … Read more
Modulo operator with negative values [duplicate]
From ISO14882:2011(e) 5.6-4: The binary / operator yields the quotient, and the binary % operator yields the remainder from the division of the first expression by the second. If the second operand of / or % is zero the behavior is undefined. For integral operands the / operator yields the algebraic quotient with any fractional … Read more
Two decimal places using printf( )
What you want is %.2f, not 2%f. Also, you might want to replace your %d with a %f 😉 This will output: When this number: 94.945600 is assigned to 2 dp, it will be: 94.95 What you want is %.2f, not 2%f.Also, you might want to replace your %d with a %f 😉#include <cstdio> int main() { printf(“When this number: %f is assigned to 2 dp, it … Read more
how to find 2d array size in c++
How do I find the size of a 2D array in C++? Is there any predefined function like sizeof to determine the size of the array? Also, can anyone tell me how to detect an error in the getvalue method for arrays while trying to get a value which is not set?
How to install Visual Studio Build Tools 2010 on Visual Studio 2015 Community?
I have a project created on Visual Studio 2010. When I try to run the project on Visual Studio 2015 Community edition I get the error below, Severity Code Description Project File Line Error MSB8020 The build tools for Visual Studio 2010 (Platform Toolset = ‘v100’) cannot be found. To build using the v100 build … Read more
Where to declare/define class scope constants in C++?
I’m curious about the benefits/detriments of different constant declaration and definition options in C++. For the longest time, I’ve just been declaring them at the top of the header file before the class definition: While this pollutes the global namespace (which I know is a bad thing, but have never found a laundry list of … Read more
C++ Error: Expected a type specifier
You can’t construct class members like this:- Instead, use an initialization list in the constuctor, like this: And I think you’ve fallen foul of the “Most Vexing Parse” because the compiler thinks logger must be a function, and it’s complaining that L”Test Component” is not a type specifier for a parameter.
Understanding error “terminate called after throwing an instance of ‘std::length_error’ what(): basic_string::_S_create Aborted (core dumped)”
This part of the code is suspicious: Your array has length 9, so the valid indices in it range from 0, 1, 2, …, 8. On iteration 8, the indicated line will try to read array index 9, which isn’t valid. This results in undefined behavior, which in your case is a misleading error message … Read more