在RStudio中安装软件包时出错

Question

尝试在R中安装软件包时，我收到以下错误。如何克服它？

var   avgIncreaseDecimal = 1 + (avgIncreaseInputValue / 100); 
var nextPopulationCalc = organismsInputValue;

// The following loop calculates the final distance traveled. /
while (count <= numDays)
{
    // Calculate the organism population. /
    nextPopulationCalc = nextPopulationCalc * avgIncreaseDecimal;

    // Display the orgamism population for each day. /
    organismsCalcListBox.Items.Add("After day " + count + ", the organism population is approx. " + nextPopulationCalc.ToString("n6"));

    // Add one to the loop counter. /
    count = count + 1;
}