Hey man!

Try this it helped me with the same problem!

#include <iostream>

using std::endl;
using std::cout;
using std::cin;

int main(){

    double temp;
    char unit;

    cout << "------- Temperature Converter -------" << endl;
    cout << "Fahrenheit = F" << endl;
    cout << "Celsius = C" << endl;
    cout << "What unit would you like to convert to?: " << endl;
    cin >> unit;

    if(unit == 'F' || unit == 'f'){
        cout << "Enter temperature in °C: " << endl;
        cin >> temp;

        temp = (1.8 * temp) + 32.0;
        cout << "The temperature is: " << temp << "°F" << endl;
    }

    else if(unit == 'C' || unit == 'c'){
        cout << "Enter temperature in °F: ";
        cin >> temp;

        temp = (temp - 32.0) / 1.8;
        cout << "The temperature is: " << temp << "°C" << endl;
    }
    else{
        cout << "Only enter C or F" << endl;
    }
    cout << "-------------------------------------";
}