Inbuilt functions in cpp, C/C++ Programming

Assignment Help:

Inbuilt Functions

i).  Functions to manipulate strings

The cstring library defines many functions to perform some manipulation operations with C-styled functions. The following are some of these functions:

  • strcat: char* strcat (char* dest, const char* src); Appends src string at the end of dest string.
    Returns dest.
  • strcmp: int strcmp (const char* string1, const char* string2); Compares strings string1 and
    string2. Returns 0 is both strings are equal.
  • strcpy: char* strcpy (char* dest, const char* src); Copies the content of src to dest. Returns dest.
  • strlen: size_t strlen (const char* string); Returns the length of string.

ii). Converting strings to other types

Due to that a string may contain representations of other data types like numbers it might be useful to translate that content to a variable of a numeric type. The cstdlib library provides three useful functions for this purpose:

  • atoi: converts string to int type.
  • atol: converts string to long type.
  • atof: converts string to float type.

All of these functions accept one parameter and return a value of the requested type (int, long or float).  


Related Discussions:- Inbuilt functions in cpp

Software crisis, defining software crisis As the technology changes ra...

defining software crisis As the technology changes rapidly the requirement for the users' change, to part the growing demand of the user for trade,  business, and personal

How private instance of a class can be assigned values, Question 1: (a)...

Question 1: (a) Explain clearly the following concepts using suitable examples of your own:- (i) concrete class v/s abstract class (ii) constructor v/s over

Find area under curve, write a c program to find the area under the curve4...

write a c program to find the area under the curve4 f=(x) between x=a and x=l integrate y=(x) between the limits of a and b Solution: #include float    start_point,

Develop diablo 2 lod 1.13d dupe method for closed battle.net, Develop Diabl...

Develop Diablo 2 LOD 1.13d Dupe Method for Closed Battle.net This hack is for diablo 2 lord of destruction The program must work on all realms, all cores, all ladders (4x rea

C program for diviser, C Program for DIVISER   void main() {  ...

C Program for DIVISER   void main() {           int result,number,min;           clrscr();           printf("ENTER THE NUMBER=");           flushall();

What is the difference between structure and class, What is the difference ...

What is the difference between structure and class? - Members of structures are public while those of a class are private. - Classes provide data hiding while structures don

Explain the break statement, The break statement The break statement, w...

The break statement The break statement, which was already covered in the switch.. case, can also be used in the loops. When a loop statement is encountered in the loops the co

Write a Programme that computes the price of portfolio, write a programme t...

write a programme that computes the price of shares and options. do the options in one-period binomial model.

Program, write a program that adds all numbers from 1 to 200

write a program that adds all numbers from 1 to 200

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd