Symbol referencing error [closed]
-
15-07-2021 - |
题
I'm writing a project about the alpha-beta prunning. And when I run it in xcode, i get Symbol referencing error:
Undefined symbols for architecture x86_64:
"Eval(Node*)", referenced from:
AlphaBeta(int, int&, int, int, int, Node*) in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
some of my code :
struct Node
{
char name[1];
int empty;// YES or NO
double value;
};
int eval(Node ptr[]) {
//some stuff
}
int AlphaBeta (int player, int &bestMove, int alpha, int beta, int bsize, Node ptr[]) {
//some stuff, and then i call Evaluation function
int value = Eval(ptr);
//some stuff
}
int main (int argc, const char * argv[])
{
int size = 4;
Node board[size*size];
// some stuff
int score = AlphaBeta(RED, move, a, b, size, board);
return 0;
}
解决方案
You have a typo:
int eval(Node ptr[])
is how the function is defined, but you call
Eval(ptr);
^
+- this was a lowercase 'e' in the definition!
later - remember that C and C++ are case-sensitive.
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