random_number

[electraKHRYSTA]

#include <stdio.h>
#include <math.h>
#include <cstdlib>
#include "random.h" 
#include "random1.h" 
#define pi 3.1415926535
 
int main(int argc, char *argv[])
    {     
int  k , n , i ;                                                                                                                                                   /* for (k=1;k<12;k++){Random();printf("random=%.2f\n",Random());}for(k=1;k<12;k++){Random1();printf("random1=%.2f\n",Random1());}*/                                      
  for ( k=1 ; k<=12 ; k++ )
              {
              double   *U1                     ;
              double valoare                   ;    
              Random()                         ;
              valoare= Random()                ; 
          //    printf("random=%.2f\n",valoare);      
           //   printf("valoare=%.2f\n",valoare) ;
              U1[k]=valoare                    ;   
              printf("U1[%d]=%.2f\n",k, U1[k]) ; 
 
              }       
for ( k=1 ; k<=12 ; k++ )
              {
              double  *U2                      ;
              double valoare1                  ;
              Random1();               
              valoare1= Random1()              ;    
          //     printf("random1=%.2f\n",valoare1);
              U2[k]=valoare1                   ;
              printf("U2[%d]=%.2f\n",k,U2[k])  ;
              }
 
 
 
 
 
for(k=1;k<=12;k++)   
      {   
          double   *R , *M , *Z1 , *Z2 , *U1 , *U2       ;
 
 
      R[k]    = sqrt(-2*log(U1[k]))     ;
      printf("random4=%.2f\n",R[k])     ;
      M[k]    = 2*pi*U2[k]              ;
      Z1[k]   = R[k]*cos(M[k])          ;
      Z2[k]   = R[k]*sin(M[k])          ;  
      double  *random_normal            ;
      random_normal[k]= Z1[k]           ;
      printf(" random_normal[k]=%.3f\n",random_normal[k] ); 
      } 
system("PAUSE");  
}
 

i have this . the problem is that the third for , U1 and U2 can't be read .
What can i do ?

[weaknessforcats]

You have all these pointers:

double *R , *M , *Z1 , *Z2 , *U1 , *U2 ;


that you are using as arrays but I see no memory allocated for the arrays.

Also, the code is very unreadable. Try to use only one statement per line of code.

Also, use code tags when submitting a code sample

[AdrianH]

math.h usually has M_PI in it. If it doesn't, try using atan(1)*4 if you want an accurate value.


Adrian

[electraKHRYSTA]

i resolve it , thx .