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c++built-in-types

Cannot assign the value of INT_MIN to a long long

signed long long value = -2147483648;
    cout << ((signed long long)value);

outputs 2147483648 (no minus sign), why?

Solution 
  • signed long long value = -2147483648;

    2147483648 cannot be represented in a 32-bit signed integer, so it is converted to an unsigned, then unary minus is applied (which doesn't change anything), and then it is assigned to the signed long long. Use -2147483648LL