exerciseEx1.cpp

#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>


using namespace std;





/*void parseStrings((const char**) ops){
    for (auto& op : ops)
    {
            cout << op << endl; 
    }
}*/


int main()
{
    
    const char* ops[] = {
        "a = 1",
        "b = 25",
        "c = \"Hello world\"",
        "d = a + b",
        "e = d + c",
        "f = 3.141592653",
        "g = true",
        "h = !g",
        "i = treu",
        "variable_1 = e",
        "variable_2 =",
        "= 256",
        "",
        "variable_3=a         ",
        "variable_4 =f",
        "variable_5= c + \" of c++ programmers\"",
        "variable_5 = variable_5 + \" using c++17\"",
        "variable_5 = 4",
        "="
    };

    //char* vecE[25];
    //strcpy( vecE, ops);
    //cout<<strlen(vecE)<<endl;


    //char newArray[40];


    for (auto& op : ops)
    {
        char a[40];
        strcpy( a, op);

        for (int i = 0; i < strlen(a); i++) {
            if (a[i] == ' '){
              a[i] = (char) 0; 
            }
        }
        string x;
        x = (string) a;
        //cout << x << endl;
        
    }

    //string s = "scott>=tiger";
    //string delimiter = ">=";
    //string token = s.substr(0, s.find(delimiter)); 
    //cout << token <<endl;

    string s = "scott>=tiger>=mushroom";
    string delimiter = ">=";
    
    size_t pos = 0;
    string token;
    while ((pos = s.find(delimiter)) != std::string::npos) {
        token = s.substr(0, pos);
        std::cout << token << std::endl;
        s.erase(0, pos + delimiter.length());
        
    }
    std::cout << s << std::endl;

    //does not work
    cout<<"deleting spaces from string: this is a test"<<endl;
    string algo = "this is a test";
    algo.replace(algo.begin(),algo.end(), ' ','x');
    cout <<algo<<endl;
}

/*

//OUTPUT:
[OK] [a = 1]
[OK] [b = 25]
[OK] [c = "Hello world"]
[OK] [d = a + b]
[ERROR] [e = d + c] Msg: [Cannot apply operator+ on variables of different type]
[OK] [f = 3.141592653]
[OK] [g = true]
[OK] [h = !g]
[ERROR] [i = treu] Msg: [Unknown variable 'treu']
[ERROR] [variable_1 = e] Msg: [Unknown variable 'e']
[ERROR] [variable_2 =] Msg: [Syntax error]
[ERROR] [= 256] Msg: [Syntax error]
[ERROR] [] Msg: [Unsupported empty expression]
[OK] [variable_3=a      ]
[OK] [variable_4 =f]
[OK] [variable_5= c + " of c++ programmers"]
[OK] [variable_5 = variable_5 + " using c++17"]
[ERROR] [variable_5 = 4] Msg: [variable_5 defined previously as 'string']
[ERROR] [=] Msg: [Syntax error]
********
a: [1]
b: [25]
c: [Hello world]
d: [26]
f: [3.141592653]
g: [true]
h: [false]
variable_3: [1]
variable_4: [3.141592653]
variable_5: [Hello world of c++ programmers using c++17]

*/