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  1. #include "stdio.h"
  2.  
  3. int main()
  4. {
  5.     volatile double x;
  6.     volatile double a;
  7.     scanf("%lf", &x);
  8.     scanf("%lf", &a);
  9.  
  10.     volatile int ix = (int) (a * x);
  11.     volatile double dx = a * x;
  12.     volatile int idx = (int) dx;
  13.     volatile int iddx = (int) (double) (a * x);
  14.  
  15.     printf("double x = %f, double a = %f\n\n", x, a);
  16.     printf("int ix = (int) (a * x) = %d\n", ix);
  17.     printf("int idx = (int) dx = (int) (a * x) = %d\n", idx);
  18.     printf("int iddx = (int) (double) (a * x) = %d\n", iddx);
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 2252KB
comments (?)
stdin
copy 
0.478
1000.0
stdout
copy 
double x = 0.478000, double a = 1000.000000

int ix = (int) (a * x) = 477
int idx = (int) dx = (int) (a * x) = 478
int iddx = (int) (double) (a * x) = 478
https://ideone.com/3VWob1
language:
C99 (gcc 8.3)
created:
11 years ago
visibility:
public

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