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

Program to design list in c, Program to design list in c: Write a prog...

Program to design list in c: Write a program in c to insert the values in list void main() { int i=0; char a[20]; clrscr(); printf("Enter the line\n");

Described friend?, A: Something to let your class to grant access to anothe...

A: Something to let your class to grant access to another class or function. Friends may be either classes or functions. Class grants access privileges to its friends. In genera

Write a program that predicts users age, Write a program that predicts user...

Write a program that predicts users age: Write a program that predicts users' age (0-128 years old) with at most 7 questions. The game starts with asking the user whether he/s

Define difference among new & malloc?, Both malloc & new functions are util...

Both malloc & new functions are utilized for dynamic memory allocations & the basic difference is: malloc need a special "typecasting" while it allocates memory for eg. if the poin

Explain bit-wise operators, Bit-wise Operators Some applications requir...

Bit-wise Operators Some applications require operations to be done on dissimilar bits of a byte separately. Bit-wise operators offer a facility to do just that. There are vario

Which one would you prefer - a macro or a function, Which one would you pre...

Which one would you prefer - a macro or a function? Actually it depends on the purpose of program! - In case of macros, corresponding code is inserted directly into your sou

Assignment, write a c program chat illustrates the creation of child proces...

write a c program chat illustrates the creation of child process using fork system call. One process finds sum of even series and other process finds sum of odd series.

Define the c preprocessor, Define the C Preprocessor? Preprocessor' is ...

Define the C Preprocessor? Preprocessor' is a translation stage that is applied to your source code before the compiler proper gets its hands on it usually the preprocessor per

Program to compute quadratic polynomial, Write a function that computes f(x...

Write a function that computes f(x) for a quadratic polynomial in x, such as the one in assignment 3. Use the function to plot f(x) from -10 to +10.

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