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Strings in C Interview Questions & Answers - Learning Mode

Strings in C Interview Questions & Answers - Learning Mode

A string in C is merely an array of characters. The length of a string is determined by a terminating null character: '

Try Strings in C Interview Questions & Answers - Exam Mode

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Strings in C Interview Questions & Answers - Learning Mode
Try Strings in C Interview Questions & Answers - Exam Mode
Question: What is the difference between System.String and System.StringBuilder classes?

Answer: System.String is immutable; System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed. Source:
Question: Explain one method to process an entire string as one unit?

Question: Why doesn?t strcat (string, ?!?); work ?

Question: What is the difference between a string copy (strcpy) and a memory copy (memcpy)? When should each be used?

Answer: The strcpy() function is designed to work exclusively with strings. It copies each byte of the source string to the destination string and stops when the terminating null character () has been moved. On the other hand, the memcpy() function is designed to work with any type of data. Because not all data ends with a null character, you must provide the memcpy() function with the number of bytes you want to copy from the source to the destination. Source:
Question: How can I convert a number to a string?

Answer: refer the library function atoi();

int atoi(char *str); Source:
Question: Write a C program that will convert Simple Sentence to Complex/Compound Sentence.

Answer: No answer available currently.
Question: How can I convert a number to a string?

Answer: The standard C library provides several functions for converting numbers of all formats (integers, longs, floats, and so on) to strings and vice versa The following functions can be used to convert integers to strings:

Function Name Purpose

itoa() Converts an integer value to a string.

ltoa() Converts a long integer value to a string.

ultoa() Converts an unsigned long integer value to a string.

The following functions can be used to convert floating-point value Source:
Question: If a string variable contain "i am a good boy" then how a c program will print "boy good a am i".?

Answer: The string reverse can be done by using the string reverse function.
That is the "strrev" function.
Question: How do you print only part of a string?

Answer: /* Use printf() to print the first 11 characters of source_str. */

printf(?First 11 characters: ?%11.11s?n?, source_str); Source:
Question: Tell me the difference between strdup and strcpy?

Answer: strcpy will not allocate the memory for the copy for you, which means you have to give it not only the pointer to the string to copy, but also a pointer to the place to copy it to, which you have set up yourself. strdup will grab itself a place to copy the string to, which you will have to free up later when you don't need the copy anymore.
Question: Write to program to accept any number upto 7 digits and convert this number into words like this
25525 :- twenty five thousands five hundred twenty five.


void pw(long,char[]);
char *one[]={" "," one"," two"," three"," four"," five"," six"," seven","
eight"," Nine"," ten"," eleven"," twelve"," thirteen"," fourteen","
fifteen"," sixteen"," seventeen"," eighteen"," nineteen"};
char *ten[]={" "," "," twenty"," thirty"," forty"," fifty"," sixty","
seventy"," eighty"," ninety"};

void main()
long n;
Enter any 9 digit no: ");
if(n Source:
Question: How to get string in files and print the string in the reverse order?

Answer: int main()
char str[] = "";
FILE *fp,*fp1;
int i=0;
fp = fopen("a.txt","r");//Source file
fp1 = fopen("b.txt","w");//Target file
if (fp == NULL)
Cannot open the file");
return -1;
while( !feof(fp))
str[i] = fgetc(fp);
if(str[i] == '
str[i+1]=' Source:
Question: how to define a class "String" that could work as a user defined string type.Include constructors that will enable us to create an uninitialized string String s1;// string with length 0 and also to initialize an object with a string constant at the time of creation like String s2("Well done!");
Include a function that adds two strings to make a third string.Note that the statement s2=s1;
will be perfectly reasonable expression to copy one string to another. Write a complete program to test your class to see that it does the following tasks:
(1)Creates uninitialized string objects.
(2)Creates objects with string constants.
(3)Concatenates two strings properly.
(4)Displays a desired string object.

Answer: #include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
class string
string s1;
string s2;
void get_data()
cin>>string s1>>string s2;
return 0;
} Source:
Question: What is the difference between a string and an array?

Answer: An array is an array of anything. A string is a specific kind of an array with a well-known convention to
determine its length.
There are two kinds of programming languages: those in which a string is just an array of characters, and those
in which it?s a special type. In C, a string is just an array of characters (type char), with one wrinkle: a C string
always ends with a NUL character. The ?value? of an array is the same as the address of (or a pointer to) the
first elemen Source:
Question: How can i print a?%? character in a print format string?

Question: What is wrong with the following c program?
char *s1 = "hello";
char *s2 = "world";
char *s3 = strcat(s1, s2);

Please provide me explanations??

Answer: Since what is present in memory beyond "United" is not known and we are attching "Front" at the end of "United", thereby overwriting something, which is an unsafe thing to do. Source:
Question: How do you print a string on the pointer?

Question: What is the advantage of using System.Text.StringBuilder over System.String?

Answer: StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it is being operated on, a new instance is created. Source:
Question: i need a code in c for strings and general, which are important and frequently asked in programming test especially for SUBEX.

Answer: No answer available currently.
Question: What is the difference between strings and character arrays ?

Answer: A major difference is: string will have static storage duration, whereas as a character array will not, unless it is explicity specified by using the static keyword.

Actually, a string is a character array with following properties:

* the multibyte character sequence, to which we generally call string, is used to initialize an array of static storage duration. The size of this array is just sufficient to contain these characters plus the terminating NUL character.

* it not s Source:

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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
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In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
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When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
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