Why is my c++ code incorrect?

[Beef Bowl]

Here's my interpretation of what my code should be doing. First it will ask me to enter the tolerance 'x'. (Relative error test 'f' should be less than the tolerance for the iteration be terminated.) then ask for the range wherein the root is located. let's say the domain is given [1,2]. Afterwards, it will go inside loop and get the respective values of 'fa' and 'fb'. Then the values will be transferred to 'c' which will then be used in 'fc'. The error test 'g' will have its own value and then be tested on the first "if statement (g<=x)". if the statement is false, it most likely will go to the else statement and satisfy the conditions inside. Before it exits the loop, the variable 't' will get 'c' present value. then the program will execute the loop again then 'c' and 't' have different values. Thanks for replying! Also, I am to get the root of the polynomial by means of false position method.

#include <iostream>
#include <iomanip>
using namespace std;
#include <cmath>
 
int main ()
{
    double a,b,fa,fb,fc,c,f,x,t,g;
    int max=10;
    int i;
    cout<<"Enter tolerance: ";
    cin>>y;
    cout<<"Enter starting values (domain):"<<endl;
    cout<<"a= ";
    cin>>a;
    cout<<"b= ";
    cin>>b;
 
    fa=1.0;
    fb=1.0;
    t=1.0;
    c=1.0;
    fc=1.0;
    f=1.0;
    g=1.0;
 
    for (i=0;i<=max;i++)
 
    {
        fa=a*a*a-3*a-5;
        fb=b*b*b-3*b-5;
        t=1.0;
        c=(b*fa-a*fb)/(fa-fb);
        fc=c*c*c-3*c-5;
        f=(c-t)/c;
        g=fabs(f);
 
        if (g <= y)
 
            break;
 
        else 
            if (fa*fc > 0)
            {
                t=c;
                a=c;
            }
            else
            {
                t=c;
                b=c;
            }
 
    }
    cout<<c;
 
 
 
        system ("pause");
        return 0;
}

[weaknessforcats]

You don't say what is incorrect.

Debugging is part of software development so this represents an opportunity to learn how to use the debugger that comes with your compiler.

Short of that you can, as a beginner, insert cout statements in the oode to show what's happening ang the way. I would do this if it's not possible to use the debugger.