C Programming - Functions

Why C Programming Functions?

In this section you can learn and practice C Programming Questions based on "Functions" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get C Programming Functions questions and answers with explanation?

IndiaBIX provides you lots of fully solved C Programming (Functions) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download C Programming Functions quiz questions with answers as PDF files and eBooks.

Where can I get C Programming Functions Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type C Programming Functions questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve C Programming Functions problems?

You can easily solve all kind of C Programming questions based on Functions by practicing the objective type exercises given below, also get shortcut methods to solve C Programming Functions problems.

1. 

The keyword used to transfer control from a function back to the calling function is

A. switch
B. goto
C. go back
D. return

Answer: Option D

Explanation:

The keyword return is used to transfer control from a function back to the calling function.

Example:


#include<stdio.h>
int add(int, int); /* Function prototype */

int main()
{
    int a = 4, b = 3, c;
    c = add(a, b);
    printf("c = %d\n", c);
    return 0;
}
int add(int a, int b)
{
/* returns the value and control back to main() function */
   return (a+b);
}

Output:
c = 7


2. 

What is the notation for following functions?

1.  int f(int a, float b)
    {
        /* Some code */
    }

2.  int f(a, b)
    int a; float b;
    {
        /* Some code */
    }

A. 1. KR Notation
2. ANSI Notation
B. 1. Pre ANSI C Notation
2. KR Notation
C. 1. ANSI Notation
2. KR Notation
D. 1. ANSI Notation
2. Pre ANSI Notation

Answer: Option C

Explanation:

KR Notation means Kernighan and Ritche Notation.

3. 

How many times the program will print "IndiaBIX" ?

#include<stdio.h>

int main()
{
    printf("IndiaBIX");
    main();
    return 0;
}

A. Infinite times
B. 32767 times
C. 65535 times
D. Till stack overflows

Answer: Option D

Explanation:

A call stack or function stack is used for several related purposes, but the main reason for having one is to keep track of the point to which each active subroutine should return control when it finishes executing.

A stack overflow occurs when too much memory is used on the call stack.

Here function main() is called repeatedly and its return address is stored in the stack. After stack memory is full. It shows stack overflow error.