Why cannot I using "%I64d" as a symbol in my VIM and G++ 4.82?

When writing %I64d in C++ with VIM and compiling them using G++ 4.82, I always feel confused. Syntax lighting didn't work and compiler told me that I need type int as argument 2 rather than long long int.

printf("%I64d", require); /* "require" is a variable name. */

How can I fix them?