Присваивание

#include <iostream>
 
using namespace std;
 
int main() {
   int a = 7, b = 4;
   a = a + b;
   a += b;
   
   a = a + 1;
   a++;
   
   a = a - 1;
   a--;
   a += -1;
   a -= 1;
   
   a = a - b;
   a -= b;
   
   a = a * b;
   a *= b;
   
   a = a / b;
   a /= b;
   
   a = a % b;
   a %= b;
   return 0;
}