问题
The error verbatim reads
1>yes.obj : error LNK2019: unresolved external symbol "int __cdecl availableMoves(int * const,int (* const)[4],int)" (?availableMoves@@YAHQAHQAY03HH@Z) referenced in function "void __cdecl solveGame(int * const,int (* const)[4])" (?solveGame@@YAXQAHQAY03H@Z)
I've never seen this error before. Here are the two functions I believe it's referring to though.
int availableMoves(int a[15], int b[36][3],int openSpace){
int count=0;
for(int i=0; i<36;i++){
if(i < 36 && b[i][2] == openSpace && isPeg(b[i][0],a) && isPeg(b[i][1],a) ){
count++;
}
}
return count;
}
and
void solveGame(int a[15], int b[36][4]) {
int empSpace;
int movesLeft;
if(pegCount(a) < 2) {
cout<<"game over"<<endl;
} else {
empSpace = findEmpty(a);
if(movesLeft = availableMoves(a,b,empSpace) < 1 ) {
temp[index] = empSpace;
d--;
c[d][0] = 0;
c[d][1] = 0;
c[d][2] = 0;
c[d][3] = 0;
a[b[c[d][3]][0]] = 1;
a[b[c[d][3]][0]] = 1;
a[b[c[d][3]][0]] = 0;
b[c[d][3]][3] = 0;
index++;
} else if(movesLeft >= 1) {
chooseMove( a, b, empSpace);
index = 0;
for(int i=0; i<4; i++) {
temp[i] = -1;
}
}
d++;
solveGame( a, b);
}
}
回答1:
Your current declaration doesn't match the definition.
You probably have declared the function availableMoves()
before you use it, but then you implement a different function:
int availableMoves(int* const a, int (* const)[4] , int);
//....
//....
//....
//code that uses available moves
int availableMoves(int a[15], int b[36][3],int openSpace)
{
//....
}
Since the compiler sees that declaration first, it will use it to resolve the call in the block of code. However, that function is not exported, as it has a different signature.
回答2:
in solved game
b[36][4]
in available moves
b[36][3]
that could create a problem.
回答3:
Nice one: you use incompatible array dimensions! Note that part of the error message reads
availableMoves(int *const,int (*const)[4],int)
While the definition of availableMoves()
looks like this:
int availableMoves(int a[15], int b[36][3],int openSpace)
Although the first dimension of the arguments is ignored, all other dimensions have to match exactly. You try to call this function with incompatible dimensions, however:
void solveGame(int a[15], int b[36][4]){
...
... availableMoves(a,b,empSpace) ...
来源:https://stackoverflow.com/questions/9220829/lnk2019-error-unresolved-external-symbol