Write a Program to find the square of a given number using Function Overloading?

Answer 1

#include

// overloads:

char square(char& c){return(c*c);}

double square(double& d){return(d*d);}

int square(int& i){return(i*i);}

int main()

{

double a=3;

double b=square(a); // b=9

int c=5;

int d=square(c); // d=25

char e=12;

char f=square(f); // f=144

return(0);

}

Note that since all the overloads will have the exact same implementation and will only differ by type, we can take advantage of C++ templates to generate the overloads for us, automatically, as and when they are required. Thus the following code is functionally equivalent to the previous code:

#include

template

T square(T& t){return(t*t);}

int main()

{

// force compiler to generate double square(double&) overload

double a=3;

double b=square(a); // b=9

// force compiler to generate int square(int&) overload

int c=5;

int d=square(c); // d=25

// force compiler to generate char square(char&) overload

char e=12;

char f=square(f); // f=144

return(0);

}