Page 65 - DCAP404 _Object Oriented Programming

Object-oriented Programming

Notes Now suppose we want the function to take float type argument then the function definition
must be changed as:

float sumfloat(float a, float b)
{
return (a + b);
}
As a matter of fact the function sum may take so many names as shown below.
int sumint(int a, int b)
{
return (a + b);

}
short sumshort(short a, short b)
{
return (a + b);
}
long sumlong(long a, long b)
{

return (a + b);
}
float sumdouble(double a, double b)
{
return (a + b);
}
This can be very tiring and extremely difficult to remember all the names. Function overloading
is a mechanism that allows a single function name to be used for different functions. The compiler
does the rest of the job. It matches the argument numbers and types to determine which functions
is being called. Thus we may rewrite the above listed functions using function overloading as:
int sum(int a, int b)
{
return (a + b);
}

float sum(float a, float b)
{
return (a + b);
}
short sum(short a, short b)
{
return (a + b);

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