error C2660: 'System::Math:: Pow' : function does not take 1 arguments

[Richard Ballin]

Hello All,

I am taking a class using Visual Studio C++ Express 2010 and on one of the first projects i need to use the Math::Pow() function. The book does not do a good job of explaining how to use this. I was able to create the program and calculate simple interest fine with a normal formula however once I needed to calculate compounded interest it required a exponent.

Line 203 of the Code is where the error is.

"error C2660: 'System::Math:: Pow' : function does not take 1 arguments"

I hope this clarifies my issue.
Thanks in advance,
Richard



Formulas used:
Simple Interest = Principal * (1 + (Years * Rate))
Compound Interest = Principal * (1 + Rate)^Years

This is the Line of code that is giving me this error:

 
 // Process data
             sum = (num1 * (Math::Pow(1 + (num2*.01)),num3));
 

Here is all of the program.

#pragma once
 
namespace InterestCalculator {
 
    using namespace System;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;
 
    /// <summary>
    /// Summary for Form1
    /// </summary>
    public ref class Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //
        }
 
    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Form1()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::Windows::Forms::TextBox^  textBoxPrincipal;
    protected: 
    private: System::Windows::Forms::TextBox^  textBoxRate;
    private: System::Windows::Forms::TextBox^  textBoxYears;
    private: System::Windows::Forms::TextBox^  textBoxSimple;
    private: System::Windows::Forms::TextBox^  textBoxCompound;
    private: System::Windows::Forms::Button^  button1;
    private: System::Windows::Forms::Button^  button2;
    private: System::Windows::Forms::Label^  label1;
    private: System::Windows::Forms::Label^  label2;
    private: System::Windows::Forms::Label^  label3;
 
    private:
        /// <summary>
        /// Required designer variable.
        /// </summary>
        System::ComponentModel::Container ^components;
 
#pragma region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        void InitializeComponent(void)
        {
            this->textBoxPrincipal = (gcnew System::Windows::Forms::TextBox());
            this->textBoxRate = (gcnew System::Windows::Forms::TextBox());
            this->textBoxYears = (gcnew System::Windows::Forms::TextBox());
            this->textBoxSimple = (gcnew System::Windows::Forms::TextBox());
            this->textBoxCompound = (gcnew System::Windows::Forms::TextBox());
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->button2 = (gcnew System::Windows::Forms::Button());
            this->label1 = (gcnew System::Windows::Forms::Label());
            this->label2 = (gcnew System::Windows::Forms::Label());
            this->label3 = (gcnew System::Windows::Forms::Label());
            this->SuspendLayout();
            // 
            // textBoxPrincipal
            // 
            this->textBoxPrincipal->Location = System::Drawing::Point(12, 25);
            this->textBoxPrincipal->Name = L"textBoxPrincipal";
            this->textBoxPrincipal->Size = System::Drawing::Size(100, 20);
            this->textBoxPrincipal->TabIndex = 0;
            // 
            // textBoxRate
            // 
            this->textBoxRate->Location = System::Drawing::Point(118, 25);
            this->textBoxRate->Name = L"textBoxRate";
            this->textBoxRate->Size = System::Drawing::Size(100, 20);
            this->textBoxRate->TabIndex = 1;
            // 
            // textBoxYears
            // 
            this->textBoxYears->Location = System::Drawing::Point(224, 25);
            this->textBoxYears->Name = L"textBoxYears";
            this->textBoxYears->Size = System::Drawing::Size(100, 20);
            this->textBoxYears->TabIndex = 2;
            // 
            // textBoxSimple
            // 
            this->textBoxSimple->Location = System::Drawing::Point(158, 51);
            this->textBoxSimple->Name = L"textBoxSimple";
            this->textBoxSimple->Size = System::Drawing::Size(166, 20);
            this->textBoxSimple->TabIndex = 3;
            // 
            // textBoxCompound
            // 
            this->textBoxCompound->Location = System::Drawing::Point(158, 77);
            this->textBoxCompound->Name = L"textBoxCompound";
            this->textBoxCompound->Size = System::Drawing::Size(166, 20);
            this->textBoxCompound->TabIndex = 4;
            // 
            // button1
            // 
            this->button1->Location = System::Drawing::Point(37, 49);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(115, 23);
            this->button1->TabIndex = 5;
            this->button1->Text = L"Simple Interest";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
            // 
            // button2
            // 
            this->button2->Location = System::Drawing::Point(37, 78);
            this->button2->Name = L"button2";
            this->button2->Size = System::Drawing::Size(115, 23);
            this->button2->TabIndex = 6;
            this->button2->Text = L"Compound Interest";
            this->button2->UseVisualStyleBackColor = true;
            this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
            // 
            // label1
            // 
            this->label1->AutoSize = true;
            this->label1->Location = System::Drawing::Point(12, 9);
            this->label1->Name = L"label1";
            this->label1->Size = System::Drawing::Size(47, 13);
            this->label1->TabIndex = 7;
            this->label1->Text = L"Principal";
            // 
            // label2
            // 
            this->label2->AutoSize = true;
            this->label2->Location = System::Drawing::Point(119, 9);
            this->label2->Name = L"label2";
            this->label2->Size = System::Drawing::Size(30, 13);
            this->label2->TabIndex = 8;
            this->label2->Text = L"Rate";
            // 
            // label3
            // 
            this->label3->AutoSize = true;
            this->label3->Location = System::Drawing::Point(223, 9);
            this->label3->Name = L"label3";
            this->label3->Size = System::Drawing::Size(34, 13);
            this->label3->TabIndex = 9;
            this->label3->Text = L"Years";
            // 
            // Form1
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(341, 115);
            this->Controls->Add(this->label3);
            this->Controls->Add(this->label2);
            this->Controls->Add(this->label1);
            this->Controls->Add(this->button2);
            this->Controls->Add(this->button1);
            this->Controls->Add(this->textBoxCompound);
            this->Controls->Add(this->textBoxSimple);
            this->Controls->Add(this->textBoxYears);
            this->Controls->Add(this->textBoxRate);
            this->Controls->Add(this->textBoxPrincipal);
            this->Name = L"Form1";
            this->Text = L"Form1";
            this->ResumeLayout(false);
            this->PerformLayout();
 
        }
#pragma endregion
    private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
                 // Declare variables num1 Principal, num2 Rate, num3 Years,
             double num1, num2, num3, sum;
 
             // Read in Data
             Double::TryParse(textBoxPrincipal->Text, num1);
             Double::TryParse(textBoxRate->Text, num2);
             Double::TryParse(textBoxYears->Text, num3);
 
             // Process data
             sum = num1 * (1 + (num3 * (num2*.01)));
 
             // Display results
             textBoxSimple->Text = sum.ToString();
             }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
             // Declare variables num1 Principal, num2 Rate, num3 Years,
             double num1, num2, num3, sum;
 
             // Read in Data
             Double::TryParse(textBoxPrincipal->Text, num1);
             Double::TryParse(textBoxRate->Text, num2);
             Double::TryParse(textBoxYears->Text, num3);
 
             // Process data
             sum = (num1 * (Math::Pow(1 + (num2*.01)),num3));
 
             // Display results
             textBoxCompound->Text = sum.ToString();
 
         }
};
}
 
 

[tdlr]

sum = (num1 * (Math::Pow(1 + (num2*.01),num3)));

fix'd. (there was one closing bracket misplaced)

[Richard Ballin]

Thank you so much... I have no idea how many times I went over this looking for little mistakes like that. Even with the IDE matching brackets I still did not find that.

This has solved my issue.

Thank you again.
Richard