Question

C# 模拟电子计算器的功能,编写一个类,实现两个整数的加减乘除运算

Answer 1

public class Calculator
{
    //加法运算
    public int Add(int a,int b)
    {
        return a+b;
    }
    
    //减法运算
    public int Sub(int a,int b)
    {
        return a-b;
    }
    
    //乘法运算
    public int Mul(int a,int b)
    {
        return a*b;
    }
    
    //除法预算
    public int Div(int a,int b)
    {
        if(b!=0)  //判断分母不能为0
        {
            return a/b;
        }
        
        return 0;
    }
}

比较简易的算法，复杂点可以使用多态！

Answer 2

class cal{
public double cal(double num1,double num2,string oper){
double result = 0;
switch(oper){
case "+":
result = num1 + num2;

break;

case "-":
result = num1 - num2;

break;
case "+":
result = num1 * num2;

break;
case "+":
result = num1 / num2;

break;
}

retrun result;

}

}

Answer 3

class cal{
public double cal(double num1,double num2,string oper){
double result = 0;
switch(oper){
case "+":
result = num1 + num2;

break;

case "-":
result = num1 - num2;

break;
case "+":
result = num1 * num2;

break;
case "+":
result = num1 / num2;

break;
}

retrun result;

}

}