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Strings in C Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM C INTERVIEW QUESTIONS STRINGS IN C INTERVIEW QUESTIONS 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: CoolInterview.com
Question: Why doesn?t strcat (string, ?!?); work ?

Answer:
Question: Explain one method to process an entire string as one unit?

Answer:
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: CoolInterview.com
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.
Source: CoolInterview.com
Question: Write a C program that will convert Simple Sentence to Complex/Compound Sentence.

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

Answer: refer the library function atoi();

int atoi(char *str); Source: CoolInterview.com
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: CoolInterview.com
Question: How to type a string without using printf function?



Answer: //printing a string without printf#includeint main(){ char *str="shobhit"; while((*str)!=NULL) { putchar(*str); str++; } return 0;} Source: CoolInterview.com
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;
if((string1<0)&&(string2<=100))
return 0;
} Source: CoolInterview.com
Question: How can I convert a number to a string?




Answer: We can convert number to string using built in function itoa().


Source: CoolInterview.com
Question: Write to program to accept any number upto 7 digits and convert this number into words like this
e.g.
25525 :- twenty five thousands five hundred twenty five.


Answer:
#include<stdio.h>

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;
clrscr();
printf("
Enter any 9 digit no: ");
scanf("%9ld",&n);
if(n Source: CoolInterview.com
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.
Source: CoolInterview.com
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: How would you implement a sbstr()function that extract a sub string from a givn string?

Answer:
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)
{
printf("
Cannot open the file");
return -1;
}
while( !feof(fp))
{
str[i] = fgetc(fp);
if(str[i] == '
')
{
str[i+1]=' Source: CoolInterview.com
Question: Can we use string in switch statement?



Answer: We cannot use a string in switch statement nor can we use

a floating point in switch statement. all we can use in a switch statement is a character and integer. Also we cannot use statements like

i<10 in case statements.This is the reason why switch can't replace IF statements although it allows us to make several choices depending upon the condition.
Source: CoolInterview.com
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: CoolInterview.com
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: CoolInterview.com

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