Create a header file named MyTriangle.h that contains the following two functions:
// return true if the sum of any two sides is greater than the third side//
bool isValid( double side1, double side2, double side3)
//Return the area of a triangle//
double area (double side1, double side2, double side3)
Implement the header file and write a test program that reads three sides of a triangle and compute the area if the input is valid. Otherwise display the input is invalid.
The formula is as follows:
s = (side1 + side2 + side3) / 2;
area = √(s (s-side1)(s-side2)(s-side3))
void main(){ double s1, s2, s3; cout<<"enter the first side: "; cin>>s1; cout<<"enter the second side: "; cin>>s2; cout<<"enter the third side: "; cin>>s3; if (isValid(s1,s2,s3)) & cout<<area(s1,s2,s3)<<"\n"; else cout<<"input is invalid\n"; }
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