Pass vector to a function
I'm reading how to use STL in C++. And I have read one code:
the above code mean functionX will use vector<a> to doing something (and it will not copy another vector-->efficiently purpose) But if I use for array c will meet error. So, my question is: the declare of functionX is especially design just for "vector"?Code:void functionX(vector<int>&a){ ...... //some line of code } int main(){ vector<int> b(10); functionX(b); int c[10]; functionX(c); //error return(0); }
thanks
Last edited by hqt; 09-14-2011 at 04:04 AM.
Yes.Originally Posted by hqt
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Oh, I'm sorry so much, my question isn't clearer and... seem to be very stupid (because functionX just only and only for vector, of course!!!). But, now, I have answer this question by myself: this type of declare just use for container in STL of C++.
Code:void X(stack<int>&Q){ //some lines of code; } voidY(set<int>&A){ //some lines of code } //BUT CANNOT USE FOR ARRAY: voidZ(int &A[10]){ //some line of code; }
Indeed, you cannot have an array of references to int. What are you trying to do?
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An array of int also cannot be implicitly converted to a vector<int>. So c (and array of 10 int) cannot be passed directly to functionX(), which expects a vector<int>.
