Compiler Warning (level 4) C4629

digraph used, character sequence 'digraph' interpreted as token 'char' (insert a space between the two characters if this is not what you intended)

Under /Za, the compiler warns when it detects a digraph.

The following sample generates C4629:

// C4629.cpp
// compile with: /Za /W4
int main()
<%   // C4629 <% digraph for {
}