I'm trying to use std::min_element
and std::max_element
to return the min and max elements in a vector of doubles. My compiler doesn't like how I'm currently trying to use them, and I don't understand the error message. I could of course write my own procedure to find the min/max, but I'd like to understand how to use the functions.
#include <vector>
#include <algorithm>
using namespace std;
int main(int argc, char** argv) {
double cLower, cUpper;
vector<double> C;
// code to insert values in C not shown here
cLower = min_element(C.begin(), C.end());
cUpper = max_element(C.begin(), C.end());
return 0;
}
Here is the compiler error:
../MIXD.cpp:84: error: cannot convert '__gnu_cxx::__normal_iterator<double*, std::vector<double, std::allocator<double> > >' to 'double' in assignment
../MIXD.cpp:85: error: cannot convert '__gnu_cxx::__normal_iterator<double*, std::vector<double, std::allocator<double> > >' to 'double' in assignment
Would someone please explain what I'm doing wrong?
min_element
and max_element
return iterators, not values. So you need *min_element...
and *max_element...
.