Write short notes about conversion functions.

1.	Write short notes about conversion functions.
Answer» The header file stdlib.h is used for conversion functions. Following are the important conversion functions 1. itoa(): It is used to convert an integer into a string. eg: int n = 100; charstr[20]; itoa(n,str,10); 2. Itoa(): It is used to convert an long into a string. eg: long n = 1002345L char str[20]; ltoa(n,str,10); 3. atoi(): It is used to convert a string into integer eg: int n; str[] = “123” n = atoi(str); 4. atoll(): It is used to convert a string into long eg: long n; str[] = “123456” n = atol(str);

Answer»

The header file stdlib.h is used for conversion functions.

Following are the important conversion functions

1. itoa():

It is used to convert an integer into a string.

eg:

int n = 100;

charstr[20];

itoa(n,str,10);

2. Itoa():

It is used to convert an long into a string.

eg:

long n = 1002345L

char str[20];

ltoa(n,str,10);

3. atoi():

It is used to convert a string into integer

eg:

int n;

str[] = “123”

n = atoi(str);

4. atoll():

It is used to convert a string into long

eg:

long n;

str[] = “123456”

n = atol(str);

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