muskan _3

//area of circle 
#include<stdio.h>
int main()
#define pie 3.14
{ float r ,area;
printf(" value of r is ");
scanf("%f" ,&r);
area =pie *r*r;
printf("area of circle is %f\n",area );

    return 0;
}


//operation 
#include<stdio.h>
int main()
{
    int a,b,add,diff,mul,mod;
    float divid;
printf("enter the values ");
scanf("%d%d",&a,&b);
add=a+b;
diff=a-b;
divid=(float)a/(float)b;
mul=a*b;
mod=a%b;
printf("sum-%d\n",add);
printf("Difference-:%d\n",diff);
printf("dividsion-%f\n",divid);
printf("product-%d\n",mul);
printf("modulus-%d\n",mod);
return 0;
}