/* Dennis Alcock, 1992, "Illustrating C", Cambridge University Press, Cambridge p. 3 */

#include <stdio.h>
#include <math.h>

int main(void) /* main program starts */
{
  /*type statements */
  float p, rpct, r, m; 
  int n;
  /*types in c are  

  printf("\nEnter Principle Rate% No. of years \n");
  scanf("%f %f %i", &p, &rpct, &n);
/*scanf assumes input is separated by spaces */
  r = rpct/100;
  m = p*r*pow(1+r,n) / (12*(pow(1+r,n)-1));
  printf("\nPriciple £%1.2f@%4.2f%% costs £%1.2f per month over %i years",p,rpct,m,n);
  printf("\nPayments will total £%1.2f\n",12*m*n);
  return 0;
  
}

/* to compile this program :-
gcc alcockex1.c -lm
-lm makes the math.h available libm.a is in /usr/lib
-lfile in the a linker option to load the file libfile.a
*/