// accumulate example #include <iostream> #include <functional> #include <numeric> using namespace std; int myfunction (int x, int y) {return x+2*y;} struct myclass { int operator()(int x, int y) {return x+3*y;} } myobject; int main () { int init = 100; int numbers[] = {10,20,30}; cout << "using default accumulate: "; cout << accumulate(numbers,numbers+3,init); cout << endl; cout << "using functional's minus: "; cout << accumulate (numbers, numbers+3, init, minus<int>() ); cout << endl; cout << "using custom function: "; cout << accumulate (numbers, numbers+3, init, myfunction ); cout << endl; cout << "using custom object: "; cout << accumulate (numbers, numbers+3, init, myobject ); cout << endl; return 0; }
原文链接: https://www.cnblogs.com/xiongqiangcs/archive/2013/04/28/3049886.html
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