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Explain some ways of doing function overloading in C++?

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YasminRadwan26

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2022-06-25

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Explain some ways of doing function overloading in C++?

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YasminRadwan26

2022-06-25

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Answer:

Function overloading can be done by changing:

1.The number of parameters in two functions.

#include <iostream>
using namespace std;
void Display(int i, char const *c)
{
    cout << " Here is int " << i << endl;
    cout << " Here is char* " << c << endl;
}
void Display(double f)
{
    cout << " Here is float " << f << endl;
}
int main()
{
    Display(5,"Five");
    
    Display(5.5);
    
    return 0;
}

Output:

Here is int 5

Here is char* Five

Here is float 5.5

2. The data types of the parameters of functions.

#include <iostream>
using namespace std;
void Display(int i)
{
    cout << " Here is int " << i << endl;
}
void Display(double f)
{
    cout << " Here is float " << f << endl;
}
void Display(char const *c)
{
    cout << " Here is char* " << c << endl;
}
int main()
{
    Display(5);
    
    Display(5.5);
    
    Display("Five");
    
    return 0;
}

Output:

Here is int 5

Here is float 5.5

Here is char* Five

3. The order of the parameters of functions.

#include <iostream>
using namespace std;
void Display(int i, char const *c)
{
    cout << " Here is int " << i << endl;
    cout << " Here is char* " << c << endl;
}
void Display(char const *c,int i)
{
    cout << " Here is int " << i << endl;
    cout << " Here is char* " << c << endl;
}
int main()
{
    Display(5,"Five");
    
    Display("Five",5);
    
    return 0;
}

Output:

Here is int 5

Here is char* Five

Here is int 5

Here is char* Five

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