Working out wastage for game

[Fheonix]

Hi i'm working on a game for my course and i'm stuck on trying to work out the wastage i know i need to work out the total lemons i have used and then minus the iLemonsneeded from it but i'm just not sure how to work it out.

            const float iWater = 0.75;
            const float iSugar = 0.25;
            const float iLemon = 0.25;
            int iNumberofdrinks;
            const float iLemonadeprice = 1.05;
 
           
 
            std::cout << "How many drinks would you like ";
            std::cin >> iNumberofdrinks;
            std::cout << "Ingredients Needed \n";
            float iWaterneeded = iWater * iNumberofdrinks;
            float iSugarneeded = iSugar * iNumberofdrinks;
            float iLemonneeded = iLemon * iNumberofdrinks;
 
 
            std::cout << "Water needed: " << iWaterneeded << std::endl;
            std::cout << "Sugar needed: " << iSugarneeded << std::endl;
            std::cout << "Lemon needed: " << iLemonneeded << std::endl;
           
            float iWastage =
            std::cout << "\n";
            std::cout << "Lemon wasted " << iWastage << std::endl;
            std::cout << "\n";
            float iprice = iNumberofdrinks * iLemonadeprice;
            std::cout << std::setprecision(3) << "That will be $" << iprice << std::endl;

[dhayden]

Use ceil() to get the smallest integer greater than or equal to a number. So iWastage is ceil(iLemonneeded) - iLemmonneeded;

[Fheonix]

Thank you very much works great :D

[48T7M4Gy]

Another way to get whole number of lemons to compare and therefore get 'wastage'.

int adjust(float aNumber)
{
    if(aNumber - (int)aNumber > 0)
        return int(aNumber) + 1;
    else
        return int(aNumber);
}