C / C++ / MFC

Quote:

Generated random number || Squaring of random number:
=========================================================
0.035679 ----- 0.001273
0.079935 ----- 0.006390
0.033320 ----- 0.001110
0.042424 ----- 0.001800
0.012387 ----- 0.000153

summation of squared number is:=0.010346

int main()
{
  int i;
  double sum = 0.0;
  double a[] =
  {
    0.035679,
    0.079935,
    0.03332,
    0.042424,
    0.012387
  };


  for (i=0; i<sizeof(a)/sizeof(a[0]); ++i)
  {
    double sq = square_root(a[i]);
    printf("a[%d] = %g, sqrt(a[%d])=%g\n", i, a[i], i, sq);
    sum += sq;
  }
  printf("sum of square roots = %g\n", sum);
}

a[0] = 0.035679, sqrt(a[0])=0.188889
a[1] = 0.079935, sqrt(a[1])=0.282728
a[2] = 0.03332, sqrt(a[2])=0.182538
a[3] = 0.042424, sqrt(a[3])=0.205971
a[4] = 0.012387, sqrt(a[4])=0.111297
sum of square roots = 0.971422

#include <stdio.h>
int main()
{
  double a [] =
  {
    0.035679,
    0.079935,
    0.033320,
    0.042424,
    0.012387
  };
  double sum, square;
  int n;

  sum = 0.0;
  for (n=0; n<sizeof(a)/sizeof(a[0]); ++n)
  {
    square = a[n]*a[n];
    sum += square;
    printf("%g ----> %g\n", a[n], square);
  }

  printf("sum of squares: %g\n", sum);

  return 0;
}

0.035679 ----> 0.00127299
0.079935 ----> 0.0063896
0.03332 ----> 0.00111022
0.042424 ----> 0.0017998
0.012387 ----> 0.000153438
sum of squares: 0.0107261

Member 10403830 wrote:

You mean I should try compiling .CPP file as .C files once ?

DWORD WINAPI process( LPVOID Var1)

#ifdef __STDC__
  static int fun1 ( struct1_inlistfile membervar1,  void_pointerinlist_file membervar2 )
#else

  static int fun1 (membervar1,  membervar2)

  struct1_inlistfile       membervar1;  
  void_pointerinlist_file  membervar2;

#endif

typedef int   (*p)(void *, void *);

typedef void *P;                         

typedef void* P; 

typedef void* (*p)();

Swap9 wrote:

right no warnings when removing __STDC__ stuff.

// A pointer to a function returning an int and accepting to parameters of type void*
typedef int   (*p)(void *, void *);
// Use it this way:
//  int some_func(void *p1, void *p2);
//  p my_func = some_func;
// Then you can call the function
//  int nRet = my_func(param1, param2);

// A pointer to an unspecified object
typedef void *P;

// A pointer to a function returning void*
typedef void* (*p)();
// With the preceeding typedef it can be also written as
typedef P (*p)();