c#实例
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using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
char k;int a,b,c,d; Console.WriteLine("请输入四则运算类型：A、S、M、D分别
代表如、减、乘、除".);
k=Console.ReadLine();
if(c==A){
Console.WriteLine("请输入被加数A{0}" ,A);
Console.WriteLine();
Console.WriteLine("请输入加数B");
Console.WriteLine();a=A+B; Console.WriteLine("结果是{0}",a);
}
if(c==S){
Console.WriteLine("请输入被减数A");
Console.WriteLine();
Console.WriteLine("请输入减数B");
Console.WriteLine();b=A-B; Console.WriteLine("结果是{0}",b);
}
if(c==M){
Console.WriteLine("请输入被乘数A");
Console.WriteLine();
Console.WriteLine("请输入乘数B");
Console.WriteLine();c=A*B; Console.WriteLine("结果是{0}",c);
}
if(c==D){
Console.WriteLine("请输入被除数A");
Console.WriteLine();
Console.WriteLine("请输入除数B");
Console.WriteLine();d=A/B; Console.WriteLine("结果是{0}",d);
}
}
}
}
