Using C++ Write a command line calculator in C++. The calculator supports the fo

Question

Using C++

Write a command line calculator in C++. The calculator supports the following mathmatical operations:

• Multiplication m

• Divison d

• Subtraction s

• Addition a

• Percentage p

The following example show cases how this calculator can be used

The calculator should also support a commandline option --history, which displays the list of all previous calculations. Check out the following example:

$ ccalc p 2 10 Ans: 20
$ calc --history History:
p 2 10
20
a23
5
m 2 40
80

By necessity you’ll have to use a file to save/load the history. For the purposes of this exercise, lets assume that the history is stored in file ccalc-history.txt sitting in the local directory.

Explanation / Answer

#include <iostream>
#include <string>

using namespace std;

int main(int argc, char** argv)
{
cout << "Hello World" << endl;
float a, b;
string code;
float result;

code = argv[1];
a = stoi(argv[2]);
b = stoi(argv[3]);
  
if(code.compare("m") == 0){
result = a * b;
cout<<result;
}   
else if(code.compare("a") == 0){
result = a+b;
cout<<result;
}
else if(code.compare("s") == 0){
result = a-b;
cout<<result;
}
else if(code.compare("d") == 0){
result = a/b;
cout<<result;
}
else if(code.compare("p") == 0){
result = (a/b)*100;
cout<<result;
}
else{
  
}

return 0;
}

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