C++：赋值运算符（17）

赋值也就是将后面的值赋值给变量，这里最常用的就是=   ，a=1那么a就是1，此外还包含以下的赋值运算

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接下来我用不一样的数去演示一遍

加等于

#include<iostream>
using namespace std;
 
int main()
{
	//	=	等于
	int a = 1;
	a = 10;
	cout << "a = " << a << endl;
 
	//	+=	加等于
	a += 10;	// a += 10;	== a = a + 10 ;
	cout << "a = " << a << endl;
 
 
	system("pause");
	return 0;
}

a += 10;   等于  a = a + 10；

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减等于

#include<iostream>
using namespace std;
 
int main()
{
	//	=	等于
	int a = 1;
	a = 10;
	cout << "a = " << a << endl;
 
	//	+=	加等于
	a += 10;	// a += 10;	== a = a + 10 ;
	cout << "a = " << a << endl;
 
	//	-=	减等于
	a = 10;
	a -= 5;		// a -= 5;	== a = a - 5 ;
	cout << "a = " << a << endl;
 
	system("pause");
	return 0;
}

 a -=5       等于        a = a - 5

---

乘等于

#include<iostream>
using namespace std;
 
int main()
{
	//	=	等于
	int a = 1;
	a = 10;
	cout << "a = " << a << endl;
 
	//	+=	加等于
	a += 10;	// a += 10;	== a = a + 10 ;
	cout << "a = " << a << endl;
 
	//	-=	减等于
	a = 10;
	a -= 5;		// a -= 5;	== a = a - 5 ;
	cout << "a = " << a << endl;
 
	//	*=	乘等于
	a = 10;
	a *= 10;
	cout << "a = " << a << endl;
 
	system("pause");
	return 0;
}

a *= 10        等于        a = a * 10

---

除等于

 

#include<iostream>
using namespace std;
 
int main()
{
	//	=	等于
	int a = 1;
	a = 10;
	cout << "a = " << a << endl;
 
	//	+=	加等于
	a += 10;	// a += 10;	== a = a + 10 ;
	cout << "a = " << a << endl;
 
	//	-=	减等于
	a = 10;
	a -= 5;		// a -= 5;	== a = a - 5 ;
	cout << "a = " << a << endl;
 
	//	*=	乘等于
	a = 10;
	a *= 10;
	cout << "a = " << a << endl;
 
	//	/=	除等于
	a = 10;
	a /= 2;
	cout << "a = " << a << endl;
 
	system("pause");
	return 0;
}

a /=2   等于 a=a/2 

---

模等于

#include<iostream>
using namespace std;
 
int main()
{
	//	=	等于
	int a = 1;
	a = 10;
	cout << "a = " << a << endl;
 
	//	+=	加等于
	a += 10;	// a += 10;	== a = a + 10 ;
	cout << "a = " << a << endl;
 
	//	-=	减等于
	a = 10;
	a -= 5;		// a -= 5;	== a = a - 5 ;
	cout << "a = " << a << endl;
 
	//	*=	乘等于
	a = 10;
	a *= 10;
	cout << "a = " << a << endl;
 
	//	/=	除等于
	a = 10;
	a /= 2;
	cout << "a = " << a << endl;
 
	//	%=	模等于
	a = 9;
	a %= 2;
	cout << "a = " << a << endl;
 
	system("pause");
	return 0;
}

 a%=2   等于 a=a%2