c++ .* operator
The .* operator is used to dereference pointers to class members.c++ .* operator
The .* operator is used to dereference pointers to class members.operator c++
Common operators
assignment | increment | arithmetic | logical | comparison | member | other
| decrement | | | | access |
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a = b | ++a | +a | !a | a == b | a[b] | a(...)
a += b | --a | -a | a && b | a != b | *a | a, b
a -= b | a++ | a + b | a || b | a < b | &a | ? :
a *= b | a-- | a - b | | a > b | a->b |
a /= b | | a * b | | a <= b | a.b |
a %= b | | a / b | | a >= b | a->*b |
a &= b | | a % b | | a <=> b | a.*b |
a |= b | | ~a | | | |
a ^= b | | a & b | | | |
a <<= b | | a | b | | | |
a >>= b | | a ^ b | | | |
| | a << b | | | |
| | a >> b | | | |operators c++
// Operators are simply functions but cooler
// E.g: The + sign is an operator, [] is an operator, you get the point
// Which is even cooler is you can overload them
// Means you can change their behavior
// I can make + actually decrement (dont do this)
int operator+(int other){
return *this - other;
}
// And make - return always 0
int operator-(int other){ return 0; }
// (THIS IS ANOTHER PROGRAM SO + AND - ARE NOT BROKEN ANYMORE)
#include <iostream>
#include <string>
#include <stdio.h>
#include <vector>
// And then im gonna make a class
class UselessClass{
private:
// And have a vector of integers with a bunch of numbers
std::vector<int> numbers = {1, 2, 3};
public:
// Then im gonna make the array index operator return the int at the index but with 5 added to the int
int operator[](int index){
return this->numbers[index] + 5;
}
};
int main(){
// And then
UselessClass a;
std::cout << a[0] << "\n";
// It will print 6
}opperanf >> c++
packet >> rec1.getPosition().x >> rec1.getPosition().y;how does ++operator works in c++
#include <stdio.h>
int main() {
int var1 = 5, var2 = 5;
// 5 is displayed
// Then, var1 is increased to 6.
printf("%d\n", var1++);
// var2 is increased to 6
// Then, it is displayed.
printf("%d\n", ++var2);
return 0;
}Copyright © 2021 Codeinu
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