C Programming - Declarations and Initializations

Answer: Option B

Explanation:

Yes, we have to specify the data type of the parameter when declaring a function.

Answer: Option D

Explanation:

Yes, Consider,

variable f1 in FILE1.C
variable f2 in FILE2.C
variable f3 in FILE3.C

If we need to use the variable f1 in the files FILE2.C and FILE3.C
We have to declare the variable f1 as extern int f1; in the files FILE2.C and FILE3.C.

Answer: Option B

Explanation:

The only way this can be achieved is to define the variable locally in main() instead of defining it globally and then passing it to the functions which need it.

Answer: Option A

Explanation:

Yes, In all the global variable declarations, you need to use the keyword extern.

Answer: Option B

Explanation:

Yes, but the function declarations must be identical.

Example:

#include<stdio.h>

void Display();
void Display();
void Display();

void Display()
{
   printf("Weclome to IndiaBIX.com..!");
}

int main()
{
    Display();
    return 0;
}

//Output:
Weclome to IndiaBIX.com..!