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I’m a beginner, so not too harsh on the criticism. Ok, so I have the code
1234567891011<br />void circle()<br />{<br />int r;<br />double Area;<br />cout << "Enter the radius: ";<br />cin >> r;<br />Area = PI * r^2;<br />cout << "The area is " << Area << "n";<br />main();<br />}and i try to compile it and i get an error saying “38 invalid operands of types
float’ andint’ to binary `operator^'”. What should I do?Hello
Well there is a sligh problem with your code. You are using ^ as a power operator but there is no such operator which performs the power operations. This operator (^) is a bitwiase operator to calculate XOR.To calculate the power you can use pow(double x, double y) function. It will calculate x power y.
Also make sure you include math.h header in your program as pow function is defined is this header file.
So your function should look like1234567891011void circle()<br />{<br />double r=0.0;<br />double m=2.0;<br />double area=1;<br />printf("enter area");<br />scanf("%lf",&r);<br />area =PI* pow(r,m);<br />printf("%lf",area);<br />getch();<br />}- 1234567891011121314#include <iostream><br />using namespace std;<br />int main()<br />{<br />float pi = 3.14;<br />int r;<br />double area;<br />cout << "Enter the radius: ";<br />cin >> r;<br />area = r * r * pi;<br />cout << "The area is " << area << "n";<br />return(0);<br /><br />} </iostream>
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