C Programming - Functions

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Exercise

"Weakness of attitude becomes weakness of character."

- Albert Einstein

Which of the following statements are correct about the program?

#include<stdio.h>

int main()
{
    printf("%p\n", main());
    return 0;
}

A.	It prints garbage values infinitely
B.	Runs infinitely without printing anything
C.	Error: main() cannot be called inside printf()
D.	No Error and print nothing

There is a error in the below program. Which statement will you add to remove it?

#include<stdio.h>

int main()
{
    int a;
    a = f(10, 3.14);
    printf("%d\n", a);
    return 0;
}
float f(int aa, float bb)
{
    return ((float)aa + bb);
}

A.	Add prototype: float f(aa, bb)
B.	Add prototype: float f(int, float)
C.	Add prototype: float f(float, int)
D.	Add prototype: float f(bb, aa)

Which of the following statements are correct about the function?

long fun(int num)
{
    int i;
    long f=1;
    for(i=1; i<=num; i++)
        f = f * i;
    return f;
}

A.	The function calculates the value of 1 raised to power num.
B.	The function calculates the square root of an integer
C.	The function calculates the factorial value of an integer
D.	None of above