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Decrement c++

How to use decrement operator in c++

#include <iostream>
using namespace std;

int main()
{
  int x = 5, y = 5;
  
  cout << x-- << " " << --y ;
  // Outputs 5 4
  
  return 0;
}

1

Decrement c++

int x = 5;
x--;
cout << x << endl;
//outputs 4

-1

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