output question based on c

Question 1

Output of following program?

#include <stdio.h> int main() {     int i = 5;     printf("%d %d %d", i++, i++, i++);     return 0; }

A	7 6 5
B	5 6 7
C	7 7 7
D	Compiler Dependent

Question 2

In C, parameters are always

A	Passed by value
B	Passed by reference
C	Non-pointer variables are passed by value and pointers are passed by reference
D	Passed by value result

Question 3

Which of the following is true about return type of functions in C?

A	Functions can return any type
B	Functions can return any type except array and functions
C	Functions can return any type except array, functions and union
D	Functions can return any type except array, functions, function pointer and union

Question 4

#include <stdio.h> int main() {   printf("%d", main);    return 0; }

A	Address of main function
B	Compiler Error
C	Runtime Error
D	Some random value

Question 5

Output?

#include <stdio.h>   int main() {     int (*ptr)(int ) = fun;     (*ptr)(3);     return 0; }   int fun(int n) {   for(;n > 0; n--)     printf("GeeksQuiz ");   return 0; }

A	GeeksQuiz GeeksQuiz GeeksQuiz
B	GeeksQuiz GeeksQuiz
C	Compiler Error
D	Runtime Error

Question 6

Output of following program?

#include<stdio.h>   void dynamic(int s, ...) {     printf("%d ", s); }   int main() {     dynamic(2, 4, 6, 8);     dynamic(3, 6, 9);     return 0; }

A	2 3
B	Compiler Error
C	4 3
D	3 2

Question 7

Predict the output?

#include <stdio.h> int main() {     void demo();     void (*fun)();     fun = demo;     (*fun)();     fun();     return 0; }   void demo() {     printf("GeeksQuiz "); }

A	GeeksQuiz
B	GeeksQuiz GeeksQuiz
C	Compiler Error
D	Blank Screen

Question 8

What is the meaning of using extern before function declaration? For example following function sum is made extern

extern int sum(int x, int y, int z)
{
    return (x + y + z);
}

A	Function is made globally available
B	extern means nothing, sum() is same without extern keyword.
C	Function need not to be declared before its use
D	Function is made local to the file.

Question 9

What is the meaning of using static before function declaration? For example following function sum is made static

static int sum(int x, int y, int z)
{
    return (x + y + z);
}

A	Static means nothing, sum() is same without static keyword.
B	Function need not to be declared before its use
C	Access to static functions is restricted to the file where they are declared
D	Static functions are made inline

 

Question 10

In C, what is the meaning of following function prototype with empty parameter list

void fun() {    /* .... */ }

A	Function can only be called without any parameter
B	Function can be called with any number of parameters of any types
C	Function can be called with any number of integer parameters.
D	Function can be called with one integer parameter