溢出提示 warning C4307:
'*'
: integral constant overflow
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int a;
a = 5000000000000000000 * 5;
int b = 5;
a = 5000000000000000000 * b;
__int64 a;
__int64 b = 20251;
printf
(
"%I64d"
, 11518251 * b);
, 11518251 * 20251i64);