它是一种使用静态lib函数的方法,如果我没有头文件,只有* .a文件,但我知道函数签名?
Yes, if you know the function signature
Just write the function signature before calling it, as:
void f(int); //it is as if you've included a header file
//then call it
f(100);
All you need to do is : link the slib.a
to the program.
Also, remember that, if the static library is written in C and has been compiled with C compiler, then you've to use extern "C"
when writing the function signature (if you program in C++), as:
extern "C" void f(int); //it is as if you've included a header file
//then call it
f(100);
Alternatively, if you've many functions, then you can group them together as:
extern "C"
{
void f(int);
void g(int, int);
void h(int, const char*);
}
You may prefer writing all the function signatures in a namespace so as to avoid any possible name-collisions:
namespace capi
{
extern "C"
{
void f(int);
void g(int, int);
void h(int, const char*);
}
}
//use them as:
capi::f(100);
capi::g(100,200);
capi::h(100,200, "string");
Now you can write all these in a header file so that you could include the header file in your .cpp
files (as usual), and call the function(s) (as usual).
Hope that helps.
最简单的方法:在头文件中写入签名,包含它并链接到库。
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