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  1. #include <stdio.h>
  2. #include <inttypes.h>
  3.  
  4. main(){
  5.         uint64_t a = 0xffffffffffffffffULL;
  6.         float b;
  7.         uint64_t c = 0;
  8.  
  9.         printf("sizeof(a)=%d sizeof(b)=%d\n", sizeof(a), sizeof(b)); //8, 4
  10.  
  11.         printf("%llu\n", a);    //=>18446744073709551615
  12.         b = (float)a;
  13.         printf("%f\n", b);     //=>18446744073709551616.000000
  14.         c = (uint64_t)b;
  15.         printf("%llu\n", c);    //=>18446744073709551615
  16. }
Success #stdin #stdout 0s 3468KB
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stdin
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Standard input is empty
stdout
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sizeof(a)=8 sizeof(b)=4
18446744073709551615
18446744073709551616.000000
18446744073709551615
https://ideone.com/3Nr06w
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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