Question

1. Find the error in each of the following c++ program segments and explain how the error can be corrected. And rewrite the program appropriately using c++

1. a. int g(void){

cout<<”Inside function g”<<endl;

int h(void)

{

            cout<<”Inside function h”<<endl;

}

                        }

2. int sum(int x, int y){

int result;

result = x+y;

                        }

3. void f(double a);

{

            float a;

            cout<<a<<endl;

}

Answer 1

a)

int g(void) //it is possible to passan argument as void. Which means the function does not wants to

//pass any argument.

{

cout<<"inside g" //it is also correct

//next statement is the error. It is not possible to define a function within a function like this. If you

//want to define you should call the function before function definition.

}

corrected code

int g(void)

{

int x;

cout<<"inside function g"<<endln;

x=h();

int h(void)

{

cout<<"inside function h"<<endln;

return;

}

return;

}

b) int sum(int x,int y) //integer return type

{

int result;

result=x+y;

}

Note that the function defined with integer return type. So must return an integer value. But it is not provided here.Corrected code

int sum(int x,int y)

{

int result;

result=x+y;

return result;

}

C) void f(double a)

{

float a;

cout<<a<<endln;

}

There is a semicolon at the end of function definition.It should be avoid.Here the function declares a as double in definition. But it also declare the same variable 'a'as float in function definition. So the compiler feels a confusion it is double or float. So the error.

Corrected code

void f(double a)

{

cout<<a<<endln;

}