小编smi*_*mba的帖子

我是C++的新手,我正在尝试制作一个"计算器":添加两个数字,减去两个数字,乘以两个数字,除以两个数字,取一个数字的正弦,取一个数字的余弦,或者取一个数的正切值.这是代码:

#include <iostream>;
#include <cmath>;
#include <string>
int main () 
{}
int ask(std::string operation);
    {
        std::cout<<"Type Addition, Subtraction, Multiplication, Division, Sine, Cosine, or Tangent:\n";
        std::cin>>operation;
            if (operation="Addition") 
            {
                goto Add
                                }
    float Add(float addend1, float addend2, float answer) 
    {
    Add:
        std::cout<<"Insert the first number to be added:\n";
        std::cin>>addend1;
        std::cout << "Insert the second number to be added:\n";
        std::cin>>addend2;
        answer=addend1+addend2;
        std::cout<<addend1<<"+"<<addend2<<"="<<answer<<"\n";
        break
    }
}

稍后会有更多功能,但我的问题在第7行.有一个错误说明:在"{"标记之前的预期unqualified-id.我知道我的缩进很糟糕,但谢谢!