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IFD:Acoustic Interfaces/introduction to c++ (view source)
Revision as of 10:39, 11 May 2020
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Hey there, we were using this [https://www.tutorialspoint.com/compile_cpp_online.php online compiler] to learn some basics about c++. Here are the code snippets we discussed: | |||
Little intro to data types: | Little intro to data types: | ||
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The code about classes and pointers: | The code about classes and pointers: | ||
#include <iostream> | #include <iostream> | ||
using namespace std; | using namespace std; | ||
class Point2D { | class Point2D { | ||
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float _y; | float _y; | ||
}; | }; | ||
int main() | int main() | ||
{ | { | ||
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point1.print(); | point1.print(); | ||
point2.print(); | point2.print(); | ||
// this is an array of integers | |||
int integerArray[5] = { 0,1,2,3,4 }; | int integerArray[5] = { 0,1,2,3,4 }; | ||
cout << "first element: " << integerArray[0] << endl; | cout << "first element: " << integerArray[0] << endl; | ||
// we can also declare an array points | |||
Point2D pointArray[3] = {point1, point2, point3 }; | Point2D pointArray[3] = {point1, point2, point3 }; | ||
pointArray[2].print(); | pointArray[2].print(); | ||
// pointer version of the code | // pointer version of the code | ||
Point2D* p2d1_ptr = new Point2D(123, 234); | Point2D* p2d1_ptr = new Point2D(123, 234); | ||