#include <stdio.h>

int main()
{
    int choice;
    float l,b,r,pr,ar;
    printf("\n\t\t\t\t\t\t\tMENU OF AREA \n\n\n1.  Rectangle \n2.  Square \n3.  Circle \n4.  Right angled triangle \n5.  EXIT");
    
    printf("\n\n Enter your choice:");
    scanf("%d",&choice);
    printf(" \n You have choosen : %d",choice);
    switch(choice)
    {
        case 1: printf("\n\n\n\n Enter length & breadth of Rectangle:");
                scanf("%f%f",&l,&b);
                printf("\n You have Entered length & breadth of Rectangle is %f",l,b);
                ar=l*b;
                pr=2*(l+b);
                printf("\n Area of Rectangle: %f & Peremeter of Rectangle: %f",ar,pr);
        break;
        
        case 2: printf("\n Enter side of Square:");
                scanf("%f",&l);
                printf("\n You have Entered Side of square is %f",l);
                ar=l*l;
                pr=4*l;
                printf("\n Area of Square: %f & Peremeter = %f",ar,pr);
        break;        
        
        case 3: printf("\n Enter radius of circle:");
                scanf("%f",&r);
                printf("\n You have Entered radius of circle is %f",r);
                ar=3.14*r*r;
                pr=2*3.14*r;
                printf("\n Area of circle:%f & Peremeter :%f",ar,pr);
        break;
        
        case 4: printf("\n Enter base and height of right angled triangle:");
                scanf("%f%f",&l,&b);
                printf("\n You have Entered base & height of Right angled triangle is %f",l,b);
                ar=1/2.0*b*l;
                printf("\n Area of right angled triangle: %f",ar);
        break;
        
        case 5: printf("\n WRONG CHOICE");
        break;
    }
    
    return 0;
}