A few days ago to do data processing when found a part of the value 0, screening and found with (int) after the integer part number is wrong, then do the following test

 
#include  

Int main () 
{
Int I, res4 res5; 
Float td1, fd1 and res1 and res2, res3; 

Td1=1.0/10; 
Fd1=1.0/1024; 
I=274645; 

Res1=I * td1/fd1; 
Res2=(int) (res1) + 1; 
Res3=(int) (res1 + 1); 
Res4=(int) (res1) + 1; 
Res5=(int) (res1 + 1); 

Printf (" % f % f % f, % d % d \ n ", res1 and res2, res3 and res4, res5); 
return 0; 
} 

The output 28123649 28123648
28123648.000000 28123648.000000 28123648.000000
This is very strange, one of the multiple + 1 under the data type conversion as failed, can't understand why,

Editor VS Code, the compiler GCC 8.1.0