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  1. #include <iostream>
  2. #include <stdarg.h>
  3.  
  4. using namespace std;
  5.  
  6. int sum_1 ( int number_of_values, ... )
  7. {
  8.     va_list arguments;
  9.     va_start ( arguments, number_of_values );
  10.     int sum = 0;
  11.     for ( int i = 0; i < number_of_values; i++ )
  12.     {
  13.         sum += va_arg ( arguments, int );
  14.     }
  15.     va_end ( arguments );
  16.  
  17.     return sum;
  18. }
  19.  
  20. int sum_2 ( int number_of_values ...)
  21. {
  22.     int sum = 0;
  23.     for ( int i = 0; i < number_of_values; i++ )
  24.         sum += *( &number_of_values + i + 1 );
  25.     return sum;
  26. }
  27.  
  28.  
  29. int main()
  30. {
  31.     cout << sum_1(3, 1, 2, 3) << endl; //prints 6
  32.     cout << sum_2(3, 1, 2, 3) << endl; //prints 6
  33. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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6
134514480
https://ideone.com/gNZkjR
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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