Write a c++ program addition of two numbers

Question

function overloading

Answer 1

Please show your own attempts.

Answer 2

Hatsy Rei
I love u! ;D

Gururaj kulkarni

You can achieve such functionality using at least two approaches,
1. function overloading plus (specifying one of the parameters as return type -- old-school style)
2. template function (just :-] )

Example of the function overloading

void f(int &a, int b) {
a+=b;
}

void f(float &a, float b) {
a+=b;
}

void f(double &a, double b) {
a+=b;
}

void f(long long &a, long long b) {
a+=b;
}

void f(__int128 &a, __int128 b) {
a+=b;
}

int main() {
int a = 4, b = 6;
f(a, b);
cout << a;
}

And the result of addition would be assigned to variable a (using a third variable c as the result holder is necessary when the current value of a needs to be retrievable e.g. void f(int a, int b, int &c) { c=a+b })

Answer 3

Cont.

Example of the template function. A template will be deduced the type of the args during compilation time.

template <typename T>
T f(T a, T b) {
return a+b;
}

int main() {
cout << f<>(4, 1) << endl;
cout << f<>(4.5, 1.2) << endl;
cout << f<>(37884312345433, 23487772228844) << endl;
}