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I want to write a function that calls another function with its arguments. See how I want that it work: int sum(int a, int b) { return a + b } int succ(int a) { return a + 1 } int size(char* str) { return strlen(str) } int call(???) { ??? } int main() { cout << call(sum, 1, 2) << endl; cout << call(succ, 41) << endl; cout << call(size, "teste") << endl; } Expected output: 3 42 5 How can I write the call function (assuming that the return value is always the same)? The only way that I can think is this: template<typename T> int call(T func, int a, int b) { return func(a, b) } template<typename T> int call(T func, int a) { return func(a) } template<typename T> int call(T func, char* a) { return func(a) } Is there any way to solve this repetition with templates, va_list or anything else? Intention: It's for drawing geometry pictures, parsing a function with the parametric equation to be drawed. Example: Vector2i circle(float t, float radius) { return Vector2i(cos(t * 2*PI) * radius, sin(t * 2*PI) * radius); } // ... draw(circle, 10); The function circle will be called many times inside draw with diferents t s (between 0.0 and 1.0 ). The others arguments of draw is sent directly to the funcions, 10 will be radius . (Vector2i is a custom class).

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