#include<stdio.h>
#include<stdio.h>
void main()
{
    char ch;
    printf("Enter your choice:\n 1.circle\n 2.rectangle\n");
    scanf("%c",&ch);
    float r,l,w,a;
    if(ch=='1'){
        printf("input :> r = ");
        scanf("%f",&r);
        a=3.14159*r*r;
        printf("area of circle :> %f\n",a);
    }
    else if(ch=='2') {
        printf("Input length and width:> ");
        scanf("%f%f",&l,&w);
        a=l*w;
        printf("area of rectangle :> %f\n",a);
    }
 
}
 
 

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