#include <rectangle.h>
#include <circle.h>
#include <triangle.h>
#include <stdio.h>
#include <string>
using namespace std;
int main(void)
{
string muoto;
double length, width;

printf("Select the shape:\n");
scanf("%s", muoto);
            if(muoto='r'){
                           printf("%s",muoto);
                           printf("Enter the parameters:\n");
                           scanf("%d %d", &length, &width);
                           printf("The area is %d",rectangle(length,width));
                           }
return 0;
}