| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||
|---|---|---|---|---|---|---|---|
Learn more about: Compiler Warning (level 4) C4245 |
Compiler Warning (level 4) C4245 |
11/04/2016 |
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85083d53-9cc2-4d12-b58c-6dad28f15cbe |
'conversion' : conversion from 'type1' to 'type2', signed/unsigned mismatch
You tried to convert a signed const type that has a negative value to an unsigned type.
The following sample generates C4245:
// C4245.cpp
// compile with: /W4 /c
const int i = -1;
unsigned int j = i; // C4245
const int k = 1;
unsigned int l = k; // okay
int m = -1;
unsigned int n = m; // okay
void Test(size_t i) {}
int main() {
Test( -19 ); // C4245
}