www.pudn.com > c.rar > Ex01-02.c

#include  
 
int radius, area; 
 
int main( void ) 
{ 
   printf( "Enter radius (i.e. 10): " ); 
   scanf( "%d", &radius ); 
   area = (int) (3.14159 * radius * radius); 
   printf( "\n\nArea = %d\n", area ); 
   return 0; 
}