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

Search property from catalogue , Implement the search property from catalo...

Implement the search property from catalogue menu option.  After selecting this option the user should be asked to specify the property using the following sub-menu: 1. Specif

Program Assignment #3, Programming Assignment #3: Vehicle Track Performance...

Programming Assignment #3: Vehicle Track Performance Tests Purpose: The purpose of this programming assignment is to give the student experience in using functions, arrays, and str

Structures, how to define the structures

how to define the structures

What is a hash function, What is a hash function? Hash function: This ...

What is a hash function? Hash function: This is the method from the set 'K' of keys into the set 'L' of memory addresses.   H: K → L These are used to verify the address

Hw8, Asks the user for an integer. if the number is less than 21, ask them ...

Asks the user for an integer. if the number is less than 21, ask them for a number again; repeat this until you get a number bigger than 20. 20 is not an acceptable number. Once yo

Example program of c programming, Write a c program to determine interchang...

Write a c program to determine interchanged values between two variables?[Hint - if loop] What will be the output of the program? How many times this loop will execute? Wr

Illustration of plot function, Illustration of Plot function: To be mo...

Illustration of Plot function: To be more common, the script could prompt the user for the time and temperature, instead of just assigning the values. Then, the axis function

Functions, Define  F u n c t i o n?  T h e r e a r e t...

Define  F u n c t i o n?  T h e r e a r e t w o t y p e s o f f u n ct i o n b u i l t - i n f un ct i o n s a n d u

Pebble merchant, to design a car that travels along the room and gives the ...

to design a car that travels along the room and gives the length of the room

Explain function overloading, Function Overloading Function overloading...

Function Overloading Function overloading is a form of polymorphism. Function overloading facilitates explaining one function having many forms. In other words it facilitates e

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