INTERVIEW QUESTIONS C FUNCTIONS IN C DETAILS

Question: Does there exist any other function which can be used to convert an integer or a float to a string ?

Answer: Some implementations provide a nonstandard function called itoa(), which converts an integer to string.

#include

char *itoa(int value, char *string, int radix);

DESCRIPTION
The itoa() function constructs a string representation of an integer.

PARAMETERS
value:
Is the integer to be converted to string representation.

string:
Points to the buffer that is to hold resulting string.
The resulting string may be as long as seventeen bytes.

radix:
Is the base of the number; must be in the range 2 - 36.

A portable solution exists. One can use sprintf():

char s[SOME_CONST];
int i = 10;
float f = 10.20;

sprintf ( s, “%d %f
”, i, f );

Some implementations provide a nonstandard function called itoa(), which converts an integer to string.

#include

char *itoa(int value, char *string, int radix);

DESCRIPTION
The itoa() function constructs a string representation of an integer.

PARAMETERS
value:
Is the integer to be converted to string representation.

string:
Points to the buffer that is to hold resulting string.
The resulting string may be as long as seventeen bytes.

radix:
Is the base of the number; must be in the range 2 - 36.

A portable solution exists. One can use sprintf():

char s[SOME_CONST];
int i = 10;
float f = 10.20;

sprintf ( s, “%d %f
”, i, f ); Source: CoolInterview.com

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