Question

Quincy College CSI 116 91 - Introduction to Programming (Fall 2019) A question 5 [30pts]: The area of a rectangle with sides w and h can be calculated using the formula w xh. Write a program in C or pseudo-code that requests the lengths of sides and from the user, calculates the area and displays the result on the screen. I suggest you use Visual Studio to check the correctness of your answer. You don't have to worry about negative values (let's say that the user will never input negative numbers). Note: choose the types of the variables carefully.

Answer 1

#include <stdio.h>

int main(void)
{
//variable declaration
double A, w, h;
//display message
printf("\nEnter the length of first side of the rectangle: ");
//input the length of first side
scanf("%lf", &w);
//display message
printf("\nEnter the length of second side of the rectangle: ");
//input the length of second side
scanf("%lf", &h);
//calculate area of the rectangle
A = w * h;
//display the rectangle area
printf("\nArea of the rectangle is: %.2lf", A);
return 0;
}

Code screenshot:

#include <stdio.h> int main (void) //variable declaration double A, w, h; //display message printf("\nEnter the length of first side of the rectangle: "); /input the length of first side scanf("%1f", &w); //display message printf("\nEnter the length of second side of the rectangle: "); input the length of second side scanf("%lf", &h); //calculate area of the rectangle A w h; /display the rectangle area printf("\nArea of the rectangle is: %.21f", A); return 0;

OUTPUT:

Enter the length of first side of the rectangle: 12.50

Enter the length of second side of the rectangle: 19.00

Area of the rectangle is: 237.50