C++ 算术运算符

尝试下面的示例来理解 C++ 中所有可用的算术运算符。

复制并粘贴下面的 C++ 程序到 test.cpp 文件中，然后编译和运行该程序。

#include <iostream>using namespace std;main() {   int a = 21;   int b = 10;   int c ;   c = a + b;   cout << "Line 1 - Value of c is :" << c << endl ;   c = a - b;   cout << "Line 2 - Value of c is  :" << c << endl    ;   c = a * b;   cout << "Line 3 - Value of c is :" << c << endl ;   c = a / b;   cout << "Line 4 - Value of c is  :" << c << endl ;   c = a % b;   cout << "Line 5 - Value of c is  :" << c << endl ;   c = a++;    cout << "Line 6 - Value of c is :" << c << endl ;   c = a--;    cout << "Line 7 - Value of c is  :" << c << endl ;   return 0;}

当上述代码被编译并执行时，它产生以下结果−

Line 1 - Value of c is :31Line 2 - Value of c is  :11Line 3 - Value of c is :210Line 4 - Value of c is  :2Line 5 - Value of c is  :1Line 6 - Value of c is :21Line 7 - Value of c is  :22