CodePudding user response:

Long is 32-bit, truncation, and can define long long

CodePudding user response:

Overflow, a memory is long, saving so much data, with long long or long double deposit, with a long double deposit, want to use % Lf output

CodePudding user response:

A 64 - bit integer defined __int64 a; The or unsigned __int64 a;

CodePudding user response:

VC 6.0

 
Unsigned __int64 test=123456789123456789; 
Printf (" % I64u \ n ", test);