Thread: Dis-Function Issues

I have been learning C programming on my own and I am just trying to get the hang of functions. And so far I seem to be missing something. Maybe just a push in the right direction.

Code:

#include <stdio.h>


#define PI 3.14


int area_Circle(int a, int r);








int main(){


 float r, a;








while (printf("Enter a number to find the area of a circle,\nEnter Zero if you would like to quit!:")){




 scanf("%f", &r);
 if("%f", r>0)
 {
  
  printf("The area is %f\n", a);
 continue;
 }




 else


   {


     "%f", r < 1;
     break;


   }
   


return 1;
}




int area_Circle(int a, int r);
{
 a;
 a = PI *r*r;
return a;     
    
}


}

I though this would work this way, As I defined PI under the "#include" statement. Please help me understand what I missing here. Thanks in advance to any help.