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Compiler Warning (level 1) C4216

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nonstandard extension used : float long

The default Microsoft extensions (/Ze) treat float long as double. ANSI compatibility (/Za) does not. Use double to maintain compatibility. The following sample generates C4216:

// C4216.cpp
// compile with: /W1
float long a;   // C4216

// use the line below to resolve the warning
// double a;

int main() {
}