C++ returning value from function

Question

I'm trying to return a value from a function but all it return is the value 1.

It's suppose to have 5 arguments in the computeCivIndex() , even if I hard coded the values the output I receive would still be 1.

Why is this so ?

float LocationData::computeCivIndex()
{
     civNum1 = 45.0 / 100;
     civNum2 = 20 + 50;
     civNum3 = civNum2 / 200;
     civNum4 = civNum1 - civNum3;
     civNum5 = 5 + 10;


    return civNum;
}

//display data
void LocationData::displaydata()
{
cout << "CIV value: " << computeCivIndex << endl;
}

Answer 1

You miss () in cout << "CIV value: " << computeCivIndex() << endl; . For importance of braces you can check this link .

Answer 2

cout << "CIV value: " << computeCivIndex << endl;

seems to be printing the value of the function (not the return value). You need to put the function brackets in:

cout << "CIV value: " << computeCivIndex() << endl;

Answer 3

//convert sunType to sunTypePercentage
float LocationData::computeCivIndex(string st, int earth, int moons, float particle, float plasma)
{

    float sunTypePercent;

    if(st == "Type 0")
    {
        sunTypePercent = 80.0;
    }
    else if(st == "Type B")
    {
        sunTypePercent = 45.0;
    }
    else if(st == "Type A")
    {
        sunTypePercent = 60.0;
    }
    else if(st == "Type F")
    {
        sunTypePercent = 75.0;
    }
    else if(st == "Type G")
    {
        sunTypePercent = 90.0;
    }
    else if(st == "Type K")
    {
        sunTypePercent = 80.0;
    }
    else if(st == "Type M")
    {
        sunTypePercent = 70.0;
    }

    // calculate CIV Value
    float civNum,civNum1,civNum2,civNum3,civNum4,civNum5;

    civNum1 = sunTypePercent / 100;
    civNum2 = plasma + particle;
    civNum3 = civNum2 / 200;
    civNum4 = civNum1 - civNum3;
    civNum5 = earth + moons;

    civNum = civNum4 * civNum5;


    return civNum;
}

//display data
void LocationData::displaydata()
{

    cout << "suntype: " << sunType << endl;
    cout << "earth: " << noOfEarthLikePlanets << endl;
    cout << "moons: " << noOfEarthLikeMoons << endl;
    cout << "particle: " << aveParticulateDensity << endl;
    cout <<"density: " << avePlasmaDensity << endl;
    cout << "CIV value: " << computeCivIndex()<< endl;
}

This is the actual code which i'm having problem with. For the computeCivIndex() function it is actually a static under the public LocationData class in my LocationData.h file which look something like this.

static float compute CivIndex(string st, int earth, int moons, float particle, float plasma);

so in order to retrieve the value from the function should I do this instead?

cout << "CIV value: " << LocationData.computeCivIndex() << endl;