Question

Complete this program, by adding a function called mag( ) to calculate the magnitude of a vector. You'll need to add a prototype before main( ), and the implementation (header & body) of the function after main( );

reminder: mag = sqrt (x ² + y ²)

Calling it with something like:

            vec_length = mag(x, y);

Name your program functions1.cpp

Answer 1

Here is the running code of your problem with output snippent, please go through the comments for better understanding

#include <iostream>
#include<math.h>
using namespace std;
double mag(int, int); // Prototype declaration
int main() {
   int x, y;
   cout<<"Enter the value of X: "; // input x
   cin>>x;
   cout<<"Enter the value of Y: "; //input y
   cin>>y;
   double vec_length = mag(x, y); // function call to mag
   cout<<vec_length; //print vec_length
   return 0;
}
double mag(int a, int b){ //Function definition of mag
   double magnitude;
   int z= (a*a)+(b*b);
   magnitude= sqrt(z); // calculate magnitude
   return magnitude; //return value
  
}

Output:

EAPinnacle Personal\Study Placement Coding\mag vector.exe nter the value of R: 8 Enter the value of Y 6 Process exited after 9.15 seconds with return value Press any key to continue - - -