# Demonstrate both unary and binary function objects. : transform « STL Algorithms Modifying sequence operations « C++

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Demonstrate both unary and binary function objects.
 ```   #include  #include  #include  #include  using namespace std; // A function object that computes a reciprocal. class reciprocal : unary_function { public:   result_type sum; result_type operator()(argument_type val) {     if(val == 0.0)         return 0.0;     return 1.0 / val; // return reciprocal   } }; int main(){   int i;   vector v;   for(i=1; i < 10; ++i) v.push_back((double)i);   transform(v.begin(), v.end(), v.begin(), reciprocal());   return 0; }           ```
Related examples in the same category
 1 std::transform with predicate 2 Transform all elements into deque from set by multiplying 10 3 Use transform function to square all elements in an array 4 Use generic template function with transform 5 Use transform to negate all elements in a container 6 Use transform to transform elements in one container into another container with ten times their value 7 Use transform to print elements negatively and in reverse order 8 Use transform to square each element 9 Use transform to add each element traversed forward with each element traversed backward 10 Use transform to print differences of two corresponding elements 11 Compute the difference 12 Use a binary function object to find the midpoints between elements in v3 and v4 and store the results in v5. 13 Subtract the mean from every data point 14 demonstrate the two-sequence form of transform() 15 Create a sequence that contains the midpoints between the values in two other sequences. 16 Use transform to make the numbers in a list go from a certain range